My ex of forever ago is torturing me!?

My ex of forever ago is torturing me. After he broke up with me I chased after him for a year and a half and broke up with 3 guys thinking he’d come back to me. I loved him, and he played me and flirted with me and made me miserable for so long! Because of my uncanny attachment to him he’s one of my closer (but not best) friends. He touches me in ways he shouldn’t (not in places) and I tell him to stop, but he doesn’t. I’ve been in a stable relationship for a year now (I’m 17) and it’s overall a good, happy relationship (every couple has their dips eh?). Lately when I push him away, he says “Jess, why do you reject me? I love you” and tries to make me feel guilty. I want to tell him off! But I don’t want to make a scene and I want him to take me seriously and understand that what he does is inappropriate. And especially that saying he loves me is inappropriate. Even though he's obviously just a lying jack-@$$. Help?