By giving him all these chances, all he is learning is that you are so desperate to be with him that you will put up with anything.

Ergo, he will continue cheating on you long after you've said "I do"...

I hear you when you say you love him, but what about you?

One of you has to love and respect you... Clearly it wont be him.

You deserve better, much better, you have your whole life ahead of you, be sure he's what you want, because he has shown you who and what he is.