How to get over the shame of being rejected. Naked.?

He is your ex, you say? That should be your answer. Many girls throw sex into a way to get a man, its not the way to keep one. You have to respect yourself more than that. Its a very good and rare thing he respected you by resisting. Don't get to thinking you have to use those methods to get a boys attention. There are other things like sports, cooking, musical talent, or good ol smarts to get the guys interested. Good luck!