His Regrets

I talked to my husband last night about how he felt when having the affair.  I asked did he even think about me or our marriage when he was with the OW having sex.  He told me that no, he never once thought about the consequences to me or our marriage after the first time.  He just wanted the sex and that my not knowing it was with our neighbor (and my good friend) added a thrill.   He has told me repeatedly that he loves me, wants me and our marriage but how do I handle the lack of remorse?  I don't know.  How do I handle the fact that he says he knows he has done wrong but shows no emotion about it?