This is a major violation. Please do not let him near you again. I have seen men like this and the only thing they care about is their own pleasure. He refused to listen to you after repeatedly being told otherwise. You can cut him off without any explanation, you dont owe it to him. If he had succeeded, it definitely would have been assault. If you want to, you can just say he violated your boundaries and you dont trust him anymore. Please take care and be safe.