He'll never leave his wife
He has the best of both worlds-you and his wife to get as much sex as he wants. Wake up and end this relationship before 10 years go by and you miss out on a true relationship where the man wants to be with you and is there for you. Sex you can get from anybody 24/7 but you can't build a solid foundation on just sex. I was involved years ago w/a married man and he decided to go back to his wife. It literally broke my heart but would never, ever do anything like that again. Not worth the emotional toll it takes on you. Be wise and end it as you will not win no matter what you think or hope will happen and he'll just magically end up with you.
Let him go and stop hanging on to fantasies that he will leave his wife for you
Because more than likely he won't. I know of several situations like this and only ONE has ever actually left his wife, and you know what; in that case the wife he left was more than better off. She ended up marrying a man that loved her, was finacially secure and gave her a life that she would never have with the cheater. The woman he went to ended up in a relationship I would only wish on my worst enemy. Leave him to his wife, and go on and find yourself a man of your own.