He also was a horrible boyfriend and was in denial about him cheating on her before the marriage so I think a lot of the resentment is also towards herself at making the choices she did.
From my experience, I would wager that you are right on that.
One of my worse, soul-searching, breakups was from a guy I barely liked. I had ended a short relationship with a guy that was entirely unsuited to me, and this guy swooped in b/c he'd wanted to date me. I barely liked him, but felt that he was perfect for me, so why not? He'd recently made two changes in his personal life that made me happy, so I went ahead. And slowly we realized that we weren't suited either, but I was so "into" having a relationship with someone with such similar beliefs on how to life a natural life that I refused to break it off. He finally did, and I was devastated. Not because of the loss of HIM, but because I had ignored my true self, yet again, in order to date him. We were in grad school together and everyone (we were just one quarter apart in our schooling and had many of the same friends) thought I was crying all the time because of him; no one believed me when I told them the truth...it just didn't make sense to them.
So if your friend ever figures that out about herself, she is lucky that she has you to believe her!
I don't speak to them, don't interact with them, and we don't even have friends or even friends of friends of friends in common.
Then again, I've been with my husband for 15 years now, so it makes sense.
I guess if I ran into any one of them, it would be neat to see where they are in life, and I would hope they are happy. So, I guess I don't hate them. (I never really thought about it, go figure!)
I think that's about where I am. Though it's only been 10 years since DH has been in my life (I met him almost immediately after kicking the last guy to the curb for the very last time), not 15...
I used to hate a few of them...they really did some mean things. Then again, I always did sort of think that those things were happening in my life because of the decisions I had made. And once I sort of paid back the universe, better things started to happen.
There's actually an ex that I would love to see again. He and I were friends before we dated, good friends, and the saddest part of the end of our dating time was that he didn't want to see me again, even as friends. He was a terrific friend!