Sounds very similar to usI don't believe my ex-wife fucked another man on our wedding night, but the man she had been fucking for years before, all through our courtship, and after our marriage, was one of our guests. I didn't find out until a year after, when I realized she was stepping out. At first she denied it, but I caught her with him again within a week after I found out, and she admitted it. "That's right, his dick is twice the size of yours and I've been fucking him since I was 16!"