Change positions?

Chloe
My boyfriend of three years only ever wants to be on bottom but I really really love it when a guy is on top. How do i tell him I want to change it up a little bit? Also a while ago he brought up giving me oral a few months ago and I said i don't know if I would be comfortable with that and he let it go knowing I want okay with it but now I want to try it. How do I bring that up too? There are a lot of sex things I just really want to talk to him about and I just don't know how to bring it up. Any help is appreciated 👑