When does the unfaithful spouse begin to think less about their affair partner, and when do their feelings for them begin to fade? I don't want to constantly be asking my husband how he is feeling about his AP, because that will just serve as a reminder of her. I appreciate that everyone is different, but I think it will help me to know how long it generally takes for the unfaithful to "get over" their feelings for the AP. The affair lasted 18 months.