Puck threw him into dumpsters, slushied him. He should have seen more coming.

And really, he had once high-hat the ones he would hear about in the news or through the grapevine. So, being one of Them himself, it was embarrassing. Embarrassing as he found it though he couldn't bring himself to tell Puck to fuck off.

Puck could punch him, kick him when he was down, call him all the degrading things he wanted - in which Puck was well learned. And still, without fail, Kurt would take him back every single time he came sobbing into his arms with the "It won't happen again"'s and "I really, really do love you"'s.

No matter the looks Mercedes would give him; she'd long ago gave up trying to actually talk to him. No matter how many times his dad would ask, "Are you alright?" and he knew if he told Burt... Puck would never be a problem again.

Even Rachel's hissed warnings that Puck would take it a step too far, one day. That he needed to get out while he could, like she had. It was in one ear and out the other.

It disgusted him, but knowing that Puck had once put his hands on Rachel only served to make him jealous, not scared. And thus, it made him even dumber.

Sadly, Kurt knows that no matter what Puck does to him, he'll take the other teen back. And it only bothers him a little.