Yes he is a nonconformist and a few months back I was griping about this to his sister, who gently reminded me "But that's what you liked about him..." and I thought, Yes that's right! I DO like this about him! Sometimes I need a kick in the pants, ya know.
There is no abuse in his past. His father was physically abusive but no SA. He did come from a ridiculously restrictive religious ratmosphere (ok, atmosphere, but I had such GOOD alliteration going) in which his mother forced him into a seminary at age 14. He lasted a couple yrs and then begged to go to a co-ed high school. His parents consented but I think he felt his passive aggressive mother's deep disappointment for many years to come, even after we were engaged as a matter of fact. She never gave up the dream that he would become a priest and refused to meet me for the longest time. Finally we were set to be engaged and I called her up and told her, I'd sure like to meet you before we get engaged...
So these things play into his sex drive, I'm sure. Plus, I think he feels a lesser physical need for it than many men do. He is fine to ML about every 3 days but can easily go weeks with minimal frustration.