Under South Carolina law, alimony terminates automatically when the supported spouse lives with a romantic partner for 90 or more consecutive days. S.C. Code § 20-3-130 defines this as "continued cohabitation" and applies to periodic alimony, rehabilitative alimony, and reimbursement alimony. The paying spouse must file a court petition and prove cohabitation through evidence such as shared residence documentation, surveillance records, or witness testimony. Lump-sum alimony is the only type that survives cohabitation in South Carolina. Courts apply an anti-circumvention rule that catches couples who strategically separate before reaching the 90-day threshold to preserve alimony payments.
| Key Facts | Details |
|---|---|
| Cohabitation Threshold | 90 consecutive days with romantic partner |
| Filing Fee | $150 (all South Carolina counties) |
| Residency Requirement | 1 year (or 3 months if both spouses are SC residents) |
| Separation Requirement | 1 year for no-fault divorce |
| Property Division | Equitable distribution |
| Alimony Types Affected | Periodic, rehabilitative, reimbursement, separate maintenance |
| Alimony Types Protected | Lump-sum only |
| Governing Statute | S.C. Code § 20-3-130 |
What Qualifies as Cohabitation Under South Carolina Alimony Law
South Carolina defines cohabitation alimony termination as residing with another person in a romantic relationship for 90 or more consecutive days under S.C. Code § 20-3-130(B)(6). The statute requires both a romantic component and a residential component, meaning casual dating without shared housing does not trigger termination. Living with a boyfriend or girlfriend who stays over several nights per week may qualify if the arrangement continues uninterrupted for the full 90-day period. Courts examine the totality of circumstances rather than relying on formal lease agreements or mailing addresses alone.
The South Carolina Supreme Court established the controlling interpretation in Strickland v. Strickland, 375 S.C. 76 (2007). In that case, the court terminated alimony where the supported spouse spent 4-5 nights per week with a romantic partner for more than 90 days, even though both parties maintained separate legal addresses. The court emphasized substance over form, meaning the actual living arrangement matters more than what the lease says. This precedent makes it clear that keeping a separate apartment while effectively living elsewhere will not protect alimony payments.
The difference between a new partner who sleeps over regularly and one who has functionally moved in often determines whether cohabitation alimony South Carolina law applies. Courts look for indicators such as shared meal preparation, commingled household expenses, joint social activities as a couple, and whether mail or belongings accumulate at the shared residence. Private investigators frequently document these patterns over the required 90-day period to build evidence for termination petitions.
Types of Alimony Affected by Living with Someone New
Periodic alimony terminates upon continued cohabitation of the supported spouse under S.C. Code § 20-3-130(B)(1). This is the most common form of spousal support in South Carolina, paid in regular installments (typically monthly) with no fixed end date. The termination is automatic by operation of law once the 90-day threshold is met, though the paying spouse must still petition the court and prove cohabitation occurred. Periodic alimony also terminates upon remarriage or death of either spouse.
Rehabilititative alimony, designed to support a spouse while they obtain education or job training, also terminates upon cohabitation under S.C. Code § 20-3-130(B)(3). This type of support typically has a defined duration (often 2-5 years) and specific goals such as completing a degree program. Even if the recipient has not yet achieved their rehabilitation goals, moving in with a romantic partner for 90 days triggers termination. Reimbursement alimony follows the same rule under S.C. Code § 20-3-130(B)(4).
Lump-sum alimony is the only type that survives cohabitation in South Carolina. Under S.C. Code § 20-3-130(B)(2), lump-sum awards terminate only upon death of the supported spouse, not upon remarriage or cohabitation. This makes lump-sum alimony the most secure form for recipients who anticipate future romantic relationships. However, courts typically award lump-sum support only when specific circumstances warrant it, such as when the paying spouse has a history of payment defaults or when a clean financial break benefits both parties.
| Alimony Type | Terminates on Cohabitation | Terminates on Remarriage | Modifiable |
|---|---|---|---|
| Periodic | Yes (90 days) | Yes | Yes |
| Rehabilitative | Yes (90 days) | Yes | Yes |
| Reimbursement | Yes (90 days) | Yes | No |
| Lump-Sum | No | No | No |
| Separate Maintenance | Yes (90 days) | N/A (not divorced) | Yes |
How the 90-Day Cohabitation Rule Works in Practice
The 90-day period runs consecutively, meaning any interruption in the living arrangement can reset the clock. Under S.C. Code § 20-3-130(B)(6), the supported spouse must reside with another person in a romantic relationship for 90 or more consecutive days before alimony terminates. A romantic partner who moves out on day 85 and returns on day 92 has arguably reset the count, requiring another full 90-day period before termination applies. Courts interpret this requirement strictly, which creates opportunities for strategic manipulation.
South Carolina law includes an anti-circumvention provision specifically designed to catch couples gaming the 90-day rule. The court may determine that continued cohabitation exists if evidence shows the supported spouse resides with another person in a romantic relationship for periods of less than 90 days and the two periodically separate in order to circumvent the 90-day requirement. This means a pattern of the boyfriend staying for 80 days, leaving for a week, and returning for another 80 days could still trigger termination if the court finds the separations were tactical rather than genuine.
Proving the anti-circumvention exception requires substantial evidence of intent to evade the statute. Courts look for patterns such as the romantic partner maintaining minimal furnishings at their supposed primary residence, mail continuing to arrive at the shared home during separation periods, or social media posts suggesting the relationship remained continuous. One South Carolina Court of Appeals case found cohabitation where the couple bought groceries together and the boyfriend kept his food at the house, demonstrating that everyday domestic behaviors serve as powerful evidence.
Evidence Required to Prove Your Ex Is Living with Someone
The paying spouse bears the burden of proving cohabitation occurred for the required 90-day period. Unlike remarriage, which creates public records that conclusively demonstrate the event, cohabitation requires building a case through circumstantial evidence. South Carolina courts accept various forms of proof including surveillance records, photographs of vehicles parked overnight, utility bills showing increased usage, witness testimony from neighbors, and social media posts documenting the relationship.
Private investigators play a significant role in South Carolina alimony cohabitation cases. A minimum surveillance record of 90 days is typically required to prove cohabitation in the state, which involves documenting overnight stays through video and photographic evidence. Because licensed private investigators have no personal stake in the outcome, judges view their testimony favorably compared to friends or family members who may be perceived as biased. Investigation costs typically range from $50-150 per hour, with total fees of $3,000-$10,000 common for 90-day surveillance operations.
Digital evidence has become increasingly important in proving living with boyfriend alimony South Carolina cases. Text messages, emails, shared streaming account activity, joint Amazon purchases, and location data from smartphone applications can all demonstrate that two people share a residence. Social media check-ins, relationship status updates, and photos showing the couple at home together provide additional documentation. Courts have also considered evidence such as mail delivery records, shared WiFi network usage, and vehicle registration at the same address.
The Court Process for Terminating Alimony Based on Cohabitation
Terminating alimony based on cohabitation requires filing a motion in the South Carolina Family Court that issued the original divorce decree. The filing fee is $150 in all South Carolina counties, paid to the Clerk of Court when submitting the motion. Low-income filers may request a fee waiver using Form SCCA/400 if household income falls below 125% of the federal poverty level ($19,500 for individuals in 2026). The motion must specifically allege that the supported spouse has engaged in continued cohabitation as defined by S.C. Code § 20-3-130.
The supported spouse will receive notice of the motion and opportunity to respond. Common defenses include arguing that the 90-day threshold was not met, that the relationship is not romantic in nature (such as a roommate situation), or that the couple maintained genuinely separate residences despite spending significant time together. The court will schedule a hearing where both parties can present evidence and testimony. South Carolina family courts have broad discretion to evaluate credibility and weigh competing evidence.
If the court finds cohabitation occurred, alimony terminates as of the date the 90-day threshold was met, not the date of the court order. This means the paying spouse may be entitled to a refund of payments made after termination should have occurred. However, courts sometimes decline to order retroactive refunds based on equitable considerations, particularly if the paying spouse delayed filing the motion after learning about the cohabitation. The entire process typically takes 3-6 months from filing to final order in uncontested cases, or 6-12 months if heavily contested.
New Partner Alimony Considerations Beyond Cohabitation
Even if cohabitation does not reach the 90-day threshold, a new partner can still affect alimony through modification proceedings. Under S.C. Code § 20-3-130, periodic alimony is modifiable based upon changed circumstances occurring in the future. If the supported spouse's romantic partner provides significant financial contributions that reduce the recipient's need for support, the paying spouse may petition for a reduction in alimony amount. This approach applies when the relationship provides economic benefit without meeting the technical definition of cohabitation.
South Carolina courts consider the financial contributions of a romantic partner when evaluating whether changed circumstances justify modification. If a boyfriend pays half the rent, covers utility bills, or provides regular gifts of money, these contributions reduce the supported spouse's actual need for alimony. The paying spouse must demonstrate a substantial change in circumstances since the original alimony order, not merely that the recipient has a new relationship. Courts will not reduce alimony based solely on dating activity without evidence of financial impact.
The distinction between termination and modification matters significantly for alimony recipients. Termination ends the obligation permanently and cannot be reinstated even if the cohabiting relationship ends. Modification reduces the amount but keeps the underlying obligation in place, allowing for future increases if circumstances change again. Some supported spouses strategically avoid cohabitation specifically to preserve the ability to seek increased alimony if the new relationship fails, though this approach carries the risk of the paying spouse documenting borderline situations.
Protective Measures for Alimony Recipients
Alimony recipients who wish to pursue romantic relationships without risking their support payments should understand exactly where the legal lines fall. Maintaining a separate residence with genuine living activities protects against cohabitation claims. This means more than keeping an apartment lease; the recipient should actually sleep there regularly, keep food in the refrigerator, have utilities in their name showing consistent usage, and receive mail at that address. Spending 3-4 nights per week with a romantic partner while maintaining these patterns generally falls short of cohabitation.
Marital settlement agreements can modify or waive the statutory cohabitation rules. During divorce negotiations, a supported spouse may bargain for language specifying that cohabitation will not terminate alimony, or that a longer period than 90 days applies. S.C. Code § 20-3-130(B)(6) states the cohabitation definition applies "unless otherwise agreed to in writing by the parties." Paying spouses sometimes agree to these terms in exchange for other concessions such as reduced monthly payments or shorter duration. Any such agreement should be drafted clearly and incorporated into the final divorce decree.
Converting periodic alimony to a lump-sum buyout eliminates cohabitation risk entirely. Some paying spouses offer a discounted present value of future payments in exchange for a one-time payment that terminates the obligation. For example, a spouse paying $2,000 monthly with an estimated 10-year duration ($240,000 total) might offer $150,000 as a lump sum. The recipient gains certainty and freedom to pursue relationships, while the paying spouse eliminates future obligations and monitoring costs. This approach requires careful financial analysis and often benefits from professional valuation.
Supportive Relationship Analysis Beyond Cohabitation
Some states have adopted "supportive relationship" standards that consider economic interdependence without requiring formal cohabitation. South Carolina does not currently use this broader standard, relying instead on the specific 90-day residential requirement. However, pending legislation in the 2025-2026 session (Bill 3074 and Bill 3098) could modify South Carolina's alimony framework. Bill 3098 proposes codifying the one-year-per-three-years formula and specifying additional termination triggers including retirement age as defined by the Social Security Act.
The supportive relationship concept examines whether a new partner provides financial support, shared expenses, or other benefits that reduce the alimony recipient's need for spousal support. Under this approach, even couples who maintain separate residences might see alimony reduced or terminated if they function as an economic unit. Florida adopted this standard in 2023, allowing courts to consider factors such as extent of shared finances, duration of the relationship, and whether the couple holds themselves out as married. South Carolina family law attorneys monitor these developments as potential future changes.
Until South Carolina adopts a supportive relationship standard, the cohabitation alimony South Carolina analysis remains focused on the 90-day residential threshold. Paying spouses frustrated by former partners who receive substantial support from romantic partners while technically avoiding cohabitation have limited recourse under current law. The modification pathway based on changed circumstances offers some relief but requires proving financial impact rather than simply demonstrating a romantic relationship exists. Legislative reform could eventually align South Carolina with states that take a broader view of post-divorce support entitlement.
How Adultery During Marriage Affects Post-Divorce Cohabitation Issues
A spouse proven guilty of adultery is permanently barred from receiving any form of alimony in South Carolina under S.C. Code § 20-3-130(A). This absolute bar applies regardless of financial need, marriage length, or any other factor that would normally support an alimony award. If the recipient spouse committed adultery during the marriage, the cohabitation analysis becomes irrelevant because no alimony exists to terminate. This makes proving marital adultery a powerful tool for spouses seeking to avoid alimony obligations entirely.
The standard for proving adultery requires showing inclination and opportunity rather than direct evidence of sexual intercourse. Inclination evidence includes romantic texts, dating profile activity, or expressions of affection toward another person. Opportunity means demonstrating circumstances where adultery could have occurred, such as hotel stays, overnight visits, or unexplained absences. South Carolina courts have found adultery based on circumstantial evidence such as a husband spending the night in a hotel room with a woman other than his wife, even without direct proof of sexual activity.
Adultery remains technically criminal in South Carolina under S.C. Code § 16-15-60, carrying potential fines up to $500 and imprisonment up to one year. Criminal prosecutions are virtually nonexistent in practice, but the statute's existence underscores how seriously South Carolina law treats marital fidelity. The adultery bar to alimony creates strong incentives for the paying spouse to investigate the recipient's conduct during the marriage before addressing post-divorce cohabitation issues.