He told Matt not to invite in the Salvatores.

Sure, it's a petty request at best, but he doesn't like the guys. Damon killed Mason -- for one thing. For another he's just a giant dick. Not to mention the bits and pieces he knows from Caroline -- needless to say he's not a fan.

So when he comes home to find Damon sitting on his couch, drinking his scotch? Well he's pretty annoyed. He crosses his arms over his chest, glaring.

"What the hell are you doing here?"