They're both pretending their worries are more superficial than they are and they know it. It gives Stephen a sense of camaraderie: neither of us agrees with this, and we both know why this party is really happening. Being around other people, especially other Capitolites, who disagree with the Capitol is comforting. Thirty seconds with Porrim is doing more to relax him than thirty minutes with Cyrus would, and he lets her take his hand.

He could bring up the fact that his clothes tonight were Cyrus's idea, too, but honestly? Stephen's tired of talking about his brother. He lets her take his hand, then laces his fingers into hers, turning it so that it's her hand he's holding up.

"And you look divine," he says, turning the compliment back on her with a nod to her costume's theme, holding her hand warmly.