Hi gsr. Well, interesting. You did get an admission of his affliction. In the 12-step programs, they say admission is the first step to getting help. And drug addicts like the feeling of drugs. Other than that I don't know how to counsel you. One thought I had is that if he wants you to love him, then perhaps at some point he will be open to getting the help he needs.
And you may want to see a sex addict counselor for advise.