Steve feels a hot surge of jealousy rise in his chest when he sees Peggy touching the mark and he nods stiffly, the muscle in his jaw twitching as he walks away. He knows it's all for show, for the sake of the mission, but there's something in him that is too honest to be able to stand seeing his girl flirting with someone else.

Not just his girl. His wife, for the purposes of this mission, and maybe the vows didn't actually happen but damned if he's not just as jealous over her affection all the same.

He takes a moment to cool off and brings back three glasses of champagne. He's not much of a drinker but he thinks he's going to need it to get through the rest of tonight.