I discovered my wife having an affair with an old friend while we were trying to become pregnant. Shortly after discovery we found out that we were pregnant. My wife is trying to convince me that there was no intercourse and that there is no doubt the baby is mine. When questioning her about why she would have an affair while we were trying to get pregnant with our first, she told me she just wanted to feel wanted and that the affair provided that. She says she would have ended it once we found out we were pregnant. I find it extremely hard to believe her story. When confronting the affair partner, who lives in a different state, he also stated there was only one visit and it was months before what our conception date would have been. I don't understand what my wife was thinking.