"Not a good enough one, but... yeah," Teddy says, "I had a reason. Billy, I'm saying this not as your boyfriend who hates that guy because you were with him, but as your friend- there's something seriously broken in him. And it's your call, but.... Just... maybe stay away from him, for a while."

You'd have to be insane, knowing what Teddy and Billy had been, to pick a fight. To basically goad one of them into beating you up.