That really blows on so many different levels and I'm so sorry that you're dealing with it.

I guess I could say a thousand different things on how inappropriately he handled that situation and the disappointment that you're left to deal with.

But the one thing that I see "good" in the whole thing is that you hate the guy now. I hope that you can take that one emotion and use it to put him behind you and move forward with your life.
Good riddance to him!