To answer your question: I HAVE NO IDEA WHY. Sexual addiction or not, he has lied to you in the past and continued a sexual relationship into the relationship with you. Fact is, his problem with sex addiction can be addressed, can his lying? I know that this flies in the face of the medical field but I just am skeptical on sexual addiction to the extent that it is portrayed today. Cheater? Claim to have sexual addiction! This is obviously my opinion, but although I am sure there are cases of real sexual addiction, I think it is not nearly as common as the world would have you believe.

That being said, regardless of whether he is addicted or not, can you truly trust him? If i were a man that had sexual addiction like that and I really wanted a my SO to trust me again, and I wanted to mend the relationship I would be going out of my way to prove myself again. Truth is, if he isn't doing those things, he's probably just toying with you until your suspicion subsides and will probably do it again once you've averted your attention from his unfaithfulness.

Oh and if a person has a sexual addiction that they are unwilling to give up and change, they need to make the choice to be single and just have casual sex. Even if he can't control his addiction, he can control whether he is involved with someone in a relationship where he has to live a double life.

There are enough men in the world that would be willing to be devoted and faithful to you. My suggestion is find one.