Who are you the angriest with?

You deserved better. You still do. Think one good thing about the relationship and move on. And ask yourself why you went after a man with a girlfriend/wife, and not somebody who was free to attach himself to you, in a healthy way. Because if a guy who had a significant other and 3 kids came on to ME? I'd be grossed out and not at all attracted to that. Good luck. (And as for the booze? Again? Why are you sabotaging your happiness?)