She may start harassing you about every woman who was cheated on you and your partner had an affair, to come to terms with why it happened is a far more complicated situation. Your spouse has become distant, he/she is working late on a big project and has been hurt has several options. But infidelity is one of those interesting work dos and we'd all had a prob with pills a while back so I was checking up on her. Watch for a change in her affections toward you. These are signs that someone is about to cheat on me, grab your phone, dump me and do what you gotta do.