Some good stuff in here; pretty much echoes the way I feel. I already have some deep-seated (deep-seeded?) trust issues so I don't think I could ever come to trust someone that I know cheated.
It reminds me of an old boss I had though. He had started a relationship with his then-wife a few years prior while they were working together. Apparently he had been asking her out for a while and she kept denying him. Eventually she gave in and they started a relationship; the issue is: she was already in a relationship at the time.
So I asked him if he ever worried that the woman that cheated on her significant other to be with him would ever do the same to him. He said "No. That guy was just lame and I'm awesome."
They went on to have two kids before he found out she had been ****ing a good friend of theirs.
"I don't know how to put this...but I'm kind of a big deal"