Being drunk is no excuse for cheating and at the very least shows immaturity, lack of respect (including self-respect) and lack of responsibility (the responsibility of being faithful to your partner).
Forget him, he is a cheater and basically a bad human being. He will probably do the same to the next woman. Sincerity is a very good quality in a person, he lacks this quality and most likely always will. The fact that he won't talk to you when he is the one who has done wrong speaks volumes about what kind of person he is.
Cut all contact and begin a process of healing from this one, try not to blame yourself because you don't deserve what he did to you. You will find someone genuine who can treat you the way you should be treated.
I am also a believer in what goes around comes around.
Take Care!
|