Uggggh help

Why does it suck worse to stop talking to someone you weren't even dating rather than someone you were! This guy and I weren't even dating and I think he had just been using me for sex.. He started treating me badly. Acting like he doesn't care, ignoring me, etc. I sent him a really long message yesterday telling him all of this and he didn't even respond. We haven't talked all  day. I know I'm worth more than just a booty call but it sucks cause I actual have feelings for him. I've told him I'm done with him before but I've always came back. If I don't text him and ignore him when I see him do you think he'll eventually text me? This sucks. Any advice is greatly appreciated. Boys suck.