Welcome Helpless,
Honestly, it sounds like you two were good in the beginning and now not so much and he wants out.
It seems like he has made the choice to pick cocaine over a stable relationship, and there isn't anything you can do to change that. My advice would be to get everything in order and put him in your past.
I know that it hurts and that we try to stay in a relationship because things used to be good but everything has an end. He is a drug addict and he is doing what drug addicts do, pick drugs over everyone. He is calling escort services, staying at hotels, blaming you for his use, and leading a triple life. It isn't a healthy relationship and you can't help him get clean. It has to be his choice and well he has choosen to stay with the drugs.
Please take care of yourself,
Maylie