You say, "that he is doing this" as if he's still doing it? It sounded to me like he did it, past tense and didn't enjoy it, and that you had a pretty good conversation about the problem together?

Ultimately it is you two's relationship. I'd work together to see what you can do to make it better, what he'd like to do to help him feel "worthy" of you and the relationship, etc. I wouldn't focus on the porn, that looks like it was just a "thing", a tool of sorts so you could get this problem out in the open. The porn is not alive, Salukigirl, it can't hurt you; you have to work with the very complicated, very live person your boyfriend is and how he feels and how you feel, etc. The porn is "unrelated" to that and focusing on it can't help either of you.