@Kyleah,
You know had you ended it, you would not react this way.
Because you didn't end it and he stopped communication you are pissed.
Why is it not right that he did that, yet if you did it, it would be?
See what I am saying? There are many ways in which things can end, communication, no communication are two of them.
What you want to know is if the wife found out, or he knew you were going to do it so cut you off, or he doesn't give a shirt anymore and simply vanished, or he found someone new.
Quote:what was wrong with me
Nothing, with someone who isn't married. You don't need to even ask that question, he used you and you know that, you accepted and you know that, it was never going to be anything more than what it was.
Go out there and be single and find a single person and if he leaves and doesn't contact you, then you can ask what you may be doing wrong for future reference.
Let it go..