Anyone dealing with a sexually addicted spouse?

My husband of eleven years has an addiction that has haunted our marriage from the very beginning, only I didn't even realize what it was, or that it had a name until I was in counseling myself.

He is always chasing a new conquest to feel validated I guess, though he is successful in his career, and has received enough attention from me over the years.  For the last few years, he has not wanted any sex from me, and has not given me any affection. 

I guess it was hard enough to deal with his addiction when he acted like he still loved me, but now he seems interested in every woman but me. He will not say he loves me, and hasn't in a few years. Meanwhile, I have been monitoring his pc and see he has been trying to hook up with other women.

As soon as these women want anything more permanent with him, he dumps them.

I felt he really loved me, despite his addiction. I stayed there because of my love for him, and begged him to get help. He refused. It has practically shattered  any self-esteem I have.

I have moved in with a man who adores me, but still miss my husband. Now he is telling everyone I left him for another man, and that it is all my fault. Sometimes I feel it is. I quit seeing my lover many times to try to salvage my marriage, but hubby was not interested in trying. However, he is adamant in reminding me that ," He did not ask me to leave". 

Now that is making me doubt my decison to leave. I miss him, and all my surroundings. I have moved 80 miles away, and am doubting myself and everything...