He's not trying to be possessive. He really isn't. He knows he has no right, for one thing, and for another he's pretty sure it'd just piss her off if he did try. He just wants to keep all this Capitolite trash away from her if he can help it.

Still, he lets her drag her away once more when it becomes apparent that she wants him to accompany her to her cake-cutting or whatever the fuck. As long as he gets a piece. Of the cake, that is. So he comes along with minimal grumbling, shouldering people out of the way where necessary. "Better be a good fucking cake," he calls, unable to resist watching where her ass is basically hanging out the bottom of her dress.