Clayton understands being somewhat of a loner. Even with being an anthropology professor, he prefers to avoid crowds and anyone who isn't Pack. If it wasn't for Elena and Jeremy, and a need for money, he would probably refuse to leave his home and be perfectly fine with it. But Elena needs people, she even likes them, and so he tries for her benefit because it makes her happy. And Elena being happy and safe is pretty much his driving force these days.

So he accepts that she wants a party and he has to admit that he is somewhat curious about the people she invites. Especially the man he doesn't recognize who looks nervous about being there.

Drawing close, he studies him with an inscrutable gaze as he lifts his chin in greeting. "Hello. Are you a friend of Elena's?"