Boyfriend refuses to eat out

So my boyfriend and I have been together for about a year and we have sex and all and he’s fingered me and I give him head but he doesn’t want to eat me out. Which I don’t mind all that much but the other day I asked him why he doesn’t want to and he said bc putting his mouth near a vagina is gross and to be honest that annoyed me bc I’m not a fan of having my mouth near a penis but I do it bc I know it makes him happy. What should I do about it?? Bc it is something I want him to do and I’m kind of annoyed by his comments.