My Wife's Still a Child! (At Night...)

I live a pure and simple newlywed life. But, if I had to name one problem... It'd be that my wife is still a child inside! She doesn't know anything about what happens in the bedroom! We are still a couple but I can't force myself on her. I really don't know how to convey my feelings to her either... Oh, my god. Everything's jiggling! My pure, naive wife's driving me crazy!