This is definitely not to say that him guilting you into sex is bad, but I think the advice in this thread is often “This is negative, leave now” instead of actually trying to help you get to the root of it so things can be fixed if you desire. I don’t personally think the answer is always to leave, and based solely on what you’ve written here, I think there could be other things at play.

For one, if there’s a few days between sex but he says you never want to have sex anymore this leads me to think that there was a time prior where the sex was more frequent. This action of physically showing love may be his love language and way of feeling loved, so now, with it not as frequent, he may be feeling neglected.

Second, his accusations that you must be getting it somewhere else. I don’t think that’s fair of him at all, but if physical touch is his love language and he’s feeling a bit unloved, it’s not a stretch that he may be feeling paranoid. I think anyone that feels unloved starts to wonder why their partner is detaching, especially if the reasons given weren’t an issue before (after work, hot days, etc.)

Certainly he may be someone to leave, because he may just feel entitled, but I think talking to him about it and reassuring him that you do love him would help. Communication is important and if you’re not telling him that you don’t appreciate the accusations and everything like you are here, how can you two get to the bottom of things? I’d suggest open conversation, potentially with a therapist who can explain these things much better than I can, if this is a relationship you want to continue.