After the break, Elena finds Stefan on the Lockwood grounds and mops at his belly wound as he explains that he was playing along with Katherine to figure out her game, but sadly, he let her get to him. Just then, Damon returns saying he wasn't able to track her. When he gets a gander at Stefan's bloody abs, he cringes and turns away. "Ooh, cover up, Fabio. We've got a crazy ex on the lose." He turns to Elena and adds, "Better watch out, looks like Katherine's trying to steal your guy." Stefan denies that's what's happening, but Damon won't swallow that. "Isn't it? I mean, it's only fair since I... went after your girl." Elena ignores them and decides to go check on Jenna and Jeremy. Once she's gone, Damon tries to get playful with his brother, putting up his dukes and telling him to make his threats and stake his claim. Stefan's voice is calm as he says he won't be fighting. Damon's all, "Why? I'd fight me." He's got a point, but Stefan's one of those dreamboat boys who actually listens to his girlfriend, so he explains: "Katherine's going to try to play us against each other, you do know that, right?" Damon taunts: "Brother, don't you worry. Our bond is unbreakable." Stefan rises and pleads his case. "We need to stay united against her, so yes, as much as I would like to kill you, I'm not going to fight you." Damon turns the screw. "I kissed Elena." D, have you not been paying attention? Not only did you kiss Katherine, you were the first person in town to figure it was Katherine at all. Stefan maintains his zen as he discusses the mistaken identity kiss: "You feel something for [Elena], because you actually care. And I'm not gonna let Katherine come in here and destroy that part of you that is finally, after all of this time, willing to feel something." Damon's face twists 'til his angelic features are warped as Stefan goes on about the reasons not to fight each other, but he does hear Stefan out.