No sex anymore?

I've been with my boyfriend for just over a year now...we haven't had sex in 6 nearly 7 months, for the first few months i kept asking and asking why we don't have sex anymore, he said i dunno, in my head i feel like he's falling out of love with me and that he's not attracted to me anymore...although he does have diabetes but i don't know if it affects it or not? Or if it is his diabetes will he ever been in the mood again? I feel so shitty with it all i bring it up and try talk to him all the time but he gets down about it because he actually doesn't know but in my head it's because he doesn't find me attractive anymore...please someone help me, someone who's been in this situation or someone who knows about this sort of stuff 😔