Well - not entirely sure how to answer that question. he was apologetic, tore the pages out, tried to explain that the song was about her, not me (I GOT that, stupid, but it still nauseates me to read that "once every heartbeat belonged to you" even if you WERE disappointed in her afterwards!). But overall, I'd say guilt and discomfort still get in the way of him giving what would be a truly satisfactory response - the "come here, let me take you in my arms, I don't know what I was ever thinking, you know there's nobody for me but you" response. H is more of the "I thought we were going to let sleeping dogs lie, that was your "ex" husband, not me, we're moving forward in a new relationship" guy.
The truth is, I guess, that my H is like most former WASs - still terrified that his luck might run out and I might leave him after all this - and so is still pretty frightened and feels pretty crummy about himself when this stuff comes up?