Oliver nods, spotting the girl easily. She's not what he expected, but Oliver isn't sure what that should have been in the first place. Maybe another Tris, some quiet, intense girl. Christina appears to have more social acumen than Tris he or he do, if her throwing a party so soon says anything.

"Any friend who'll do that so soon after getting used to a weird place like this is a keeper," he says with a smile. Tommy would probably have done the same, shrugging off the weirdness of the city with a smile and a slap on the back.