farting boyfriend

my boyfriend farts so much im literally turned off by him ive been with him for almost 6 yrs and im over it because he just started this about 2 yrs ago where he doesnt say he is about to fart and he doesnt say excuse me .. now i never fart or poop around him but if i ever mention that i have to do it im gross for doing that... i love my boyfriend but im really turned off .. how would you handle it?