Question for men

What makes a man just stop wanting his wife? Sexually, physically.. meaning, hugs and stuff. I make him feel wanted. I can see he likes it and I'd love to feel that too. I stop myself because I know he doesn't want sex with me. It's slowly killing me and honestly, killing whatever I feel for him too. it's been over a year that he stopped approaching me. We've been working on things, but sex doesn't seem to be anything he wants with me at all. He blames his weight. He blames me. He blames arguments. He blames it on him being tired. I've heard every excuse. I want passion. I want love. I want to feel wanted too. I want something. Anything. I don't want to beg anymore or look stupid while getting rejected time after time. Idk where it all went wrong or when it's finally gonna be over. I want answers and I'm not getting them from him. I hope someone can help me understand.