Henry can see the expressions flit across his tent mate's face, as if trying to suss out whether the offer was a serious offer or not. He's tempted to express his own sincerity or incredulity, whatever works at the time, but he keeps the look on his very neutral. He doesn't want to influence Bucky's decision whatsoever, but just give him the option should he want to try.

He doesn't like to assume that what he considers normal is normal to others, but it's not wrong to assume that Henry isn't aware. Just from the new bits of information alone, his presumption is that people were a little more conservative back then.

"Of course."

He takes the question as a reply. It insinuates that he's going for it, so he leans in and closes the gap with practiced precision. Eyes closed, and head tilted just right to press his lips against Bucky's, he keeps his hands to himself for now and holds it for a respectable amount of time.