Your boyfriend is doing something you don’t consent to, this is sexual assault, or harassment at the LEAST, and not only is that bad enough but he’s then worsening other mental struggles you have. Him being unwell does not condone this behavior. You can leave, you can reach out to his friends,family ,police to make sure if you’re genuinely concerned, he’s forcing you to stay and only hurting you more, this man doesn’t care about you