Sometimes sex isn’t what it seems

Clay’s live-in lover is allowed/expected to have sex with others. There are three rules for her to observe while having sex with other men: no sex with men from work, no sex with other men in her own home, and she has to tell Clay when she dates. In fact she is expected to tell him the details of each sexual encounter. She gets caught by another woman breaking two of those rules and the relationship undergoes a change.