What to do about sex life?

I’ve been with my bf for almost 3 yrs and as far as sexual stuff it’s never been an issue. But for the last few months he never seems interested in sex, at all. If I didn’t initiate it wouldn’t happen and even sometimes when i do he tells me no. Anytime I bring this up to him he gets pissy and tells me he loves me. I always try to let him know like “hey I don’t really feel like you’re attracted to me is there something I’ve done” and he will either say like I said he loves me or I’m being insecure and will follow up with you badgering me about it doesn’t make me want too. I’m really confused on what to do because it’s so obvious he doesn’t want me that it hurts my feelings and I’m starting to think there’s something wrong with me i have severe anxiety about and wonder if i just need to end the relationship. I know a relationship isn’t all about sex and he’ll try to say that’s what I think when it’s not. I would just like to feel wanted and loved. I’m not sure what to do...