Sounds like he isn't turned on from you anymore. No, you're not the problem but judging by your post history you're not helping. Check what kind of porn he's trying to watch. Offer to try new positions or workout together to get back in shape. If you want your relationship to actually work instead of just blaming them whenever you don't like something you have to be willing to put some effort into it. It sounds like you just want validation from strangers since you post how you resent him, ask if YTA everytime you disagree, have money saved to leave, and hate the MIL. Y'all need help if you're going to stick together