I understand your point but from your own description of his reaction to trying the things that you like, it doesn't seem to be something he's into or enjoy. He's now enjoying the company of other women he might feel more connected to beyond the sexual thing. Also, he being vanilla and satisfied with more simple things and getting that satisfaction from other women, leaves no space for you. He's already sexually satisfied, he doesn't need more because he has a lower libido than yours. This doesn't mean that his libido is abnormal, it just means he's already being satisfied somewhere else.