He's losing interest in me?

That's so sad. Its just too bad that you don't understand that you are better than that, later on he will realize that the ex is the ex.. But I really hope you don't wait until that day comes, cuz then it means you are messing with your head, creating emotions that do not really exist. I think you like him & are rushing the "having a boyfriend" thing that young women usually experience. Go out with more guys, trust me there are millions of guys that would not reject you & would appreciate you more than he does (actually he doesn't). Set goals, get dressed, put some make-up on, do some girlie things so your self-esteem grows.. Btw, I think he is an trust me you dont want him for you ;) Good luck!