She seems to think that when she spends the night out, I believe her when she says she is her friend's house. (Another female same age as her). I don't believe her, and I don't wanna ask her friend as it may make matters worse. Her and OM use one of the msging app, so there is no track of it in the phone records, however the first time after the BD she spent the night away, she sent a tm that she spent the night at a friend's and she is not well, so she won't be coming home or to work. I replied no prob hope u feel better. Next day I logged into the phone account got a number she sent a tm to at 2am. It was the OM's number. The fact that I know this and I wanna wait till the dust is settled with her trip to her parents ( Allowing cake-eating for a couple of months. How bad is this decision?