Harry's eyes go wide for a second and he chokes a bit on the air he was breathing in.

"No, fuck. It's not like... He's seeing someone."

Harry, a little too late, realizes that those words do nothing to dissuade anyone of the notion that he's somehow romantically interested in Peter.

"I mean. Fuck." A deep exhale. "It is complicated, but not like that. Peter is... We were best friends, when we were kids. But he's here from eight years in my future." Another sigh, where the implications of Harry's terminal illness hang heavily in the air.

(At least, he assumes that's why Peter reacted so severely to seeing him here. They still haven't really addressed the elephant in the room between them.)