I'm sorry this is really dumb but how did you delete this post...?

Talk to him. Also don't marry someone you aren't sexually compatible with. It's a major part of a healthy relationship.

Just tell him what u want 

Talk to him about switching things up. He may be assuming that you only like missionary. Maybe he really likes the intamcy of being face to face. My SO and I had to find a fun balance between missionary and rough sex.