"I guess in a nutshell, I am more into ML and he is more into F#$%ing"
That was my thinking with my wife. In a way, it was symptamatic of other problems in our R. I felt unconsiously that more passionate and kinkier sex could make up for the lack of affection I felt. I felt the same way your H did, that her lack of openness to try new things was a reflection of her feelings for me. I would have also been happy to ML as well, but not for me to ML to her but for her to ML to me (Not just phsyically but emotionally as well.)
I needed her to be I think you may find that after opening up a bit like you have, he will shift more to the ML side of the spectrum.