Boyfriend loves my Farts!!!

Ok so every time I fart my Bf smells my butt !! It's so weird !! He says he just loves the smell !! Today he went over board tho .. I was on the toilet pooping and he came in and told me to stand up.. I was like wtf .. he tired sniffing my fricken ass !! I'm like get out !!! Idk what's wrong with him !!