I'm glad someone else mentioned this topic! I am extremely hypersexual (embarrassing to admit).. I think about it much of the day, and overindulge when I can get it. The thing is that I am almost obsessed with pleasing my partner and don't care about getting anything in return. I think maybe I get a good feeling from knowing I am connecting with another person without having a conversation. I'm very physically affectionate which is much easier for me than to be verbal with others.
Stand to reason for some of those on the spectrum. To be able to effectively "connect" with someone else without all the hassles of conventional communication. Interesting point!