Dh had a couple of affairs in the past, I found out about them at the same time. Are now trying to work through etc. I didn't want to know the details at the time, and still don't really.
My concern now is that this week I've noticed dh looking at women, not discreetly, but will actually break off conversations to look them up and down. Also there was a situation where a woman thought he was alone in a public place (we had to sit separately) and they were having a horrible flirtatious chat, until he noticed that I had noticed and my discomfort, then stopped.
I feel so bad that I can kind of see how the affairs might have happened or started off, if that makes sense. I'm not some green eyed monster, or possessive, I never have been. But I felt very uncomfortable about the above.