He doesn't want to eat me out.

I've been with my boyfriend for about two years now and he's never fully eaten me out. I asked him yesterday why and he said he doesn't like to because it feels weird. I shower regularly ( especially when I go see him ) I know that yea vagina's have taste and smells. But I give the man blowjob's all the time and I'm just not satisfied during sex. How can I ease him into finally going down on me?