Inexperienced

So I've been with my boyfriend for 2 years and trust me, our sex is great. He can get me off and I know I can do that for him. But I keep trying to introduce new, exciting things to our sex life and he is absolutely not having it. He is the type of person that has no problem with having 0 variety in his life, but I'm the complete opposite. Any tips on how to "spice up" (for lack of a better word) our sex life?