Firstly, I am so sorry this happened to you! BIG HUGS!!!
IMHO, you deserve someone who is honest, loving and faithful. This guy does not deserve you.
I have been in situations like this......I believe this guy is a player. I met a guy who did a similar thing and the worse thing was he used the same lines on me as he used on the other woman. Guess what? We both fell for his lines, hook, line and sinker. I know all this because the other woman and myself met for coffee. We both broke up with him on the same day hehehehe. That woman and myself are still friends now.
Success and happiness are the best revenge. My only advice would be to focus on yourself instead of him.....you are worth the attention, he is not!
Chin up honey, we all have to kiss lots of toads before we meet our princes.