Why did this guy stop texting me?!?

Well, maybe he feels like he's the one annoying you.. especially since he told you that you were acting weird after he tried to feel you up. Maybe he feels like he was coming on too fast or strong and made you uncomfortable. He's probably just giving you space. That, or because you didn't let him feel you up, that's a sign that you won't be putting out anytime soon. But I doubt that's the reason.