We get this call from family law attorneys more than almost any other: “My client believes their co-parent is cohabitating with someone new around the kids, but we can’t prove it — and a hunch doesn’t hold up in court.”
Most Texas divorce decrees involving children include some version of a morality clause, restricting overnight stays by a romantic partner while the children are present. Whether the issue is enforcing that clause, arguing a custody modification, or addressing cohabitation during an active divorce proceeding, the legal standard requires more than a suspicion or a neighbor’s tip.
Courts want a demonstrated, ongoing pattern — not a single overnight stay. That means documentation showing the new partner treats the residence as a primary presence over time: consistent overnight stays while the children are in the home, personal belongings at the property, vehicle presence on a recurring schedule, and behavior consistent with shared domestic life rather than an occasional visitor. A single weekend, even a memorable one, rarely moves the needle. A pattern across several weeks does.
This is where physical surveillance does the work a private conversation or a social media screenshot can’t. Our team builds a time-stamped, pattern-of-life record — dates, arrival and departure times, vehicle movement, and photographic documentation gathered lawfully from public vantage points. That record is what turns “we think someone’s staying over” into evidence an attorney can actually use in a custody modification petition or to enforce an existing decree.
How Is Cohabitation Evidence Gathered Legally?
A few things we tell every attorney upfront: this takes time. Courts want a pattern, not a snapshot, so a single week of surveillance rarely tells the whole story. And it has to be done within legal bounds — no trespassing, no intercepting communications, nothing that gives opposing counsel an excuse to have the evidence excluded. A licensed investigator working from public vantage points, on a documented schedule, is what keeps this evidence usable instead of vulnerable to a motion to exclude.
Done correctly, this is one of the most efficient ways to convert a parenting dispute into a resolved one — because once the pattern is documented, most cases settle rather than go to a contested hearing. Opposing counsel generally understands the strength of a time-stamped, photographically documented record better than their own client does, and that recognition is often what moves a case toward resolution without a hearing at all.