Pete and Pete
The fight went out of him all at once, Peter could practically see it leaching out of him, and he ached for the younger Peter, it was awful seeing the weight of this on him and knowing that he could make it through but also knowing how unfair it was that he had to at all. And things sounded like they were even darker for this Peter than they had been for him - well in some ways, he supposed it was different. Thanos had been a thing where he was from but it hadn't been the same devastation that they'd had where Peter was from, but he'd had his own battles that had left him broken at times, unsure if he had the strength to keep on doing this even as he knew there was no other choice.
"Believe me, Pete," He said with a soft huff, "You never have to thank me for anything." He promised, it was a little bit like selfishness wasn't it? Trying to support some other version of yourself? To give him the things that he wished he'd had when he'd been younger? Or was it? He didn't really know, all he knew was that Peter needed something even when he haltingly told him he couldn't.
And well it was obvious what he needed after that, the same thing that Peter would have needed if their situations were reversed, if he'd been where Peter was looking up at some other version of himself having lost what he'd lost - well - yeah Peter knew exactly what Peter needed and couldn't figure out how to actually ask for. It was what he'd wanted to give him already.
"It's okay, you don't have to." Maybe that was a benefit of talking to another you? Who knew what you needed better than you? In any case, Peter didn't shy away from offering the hug he'd wanted to before, not just the sort of resolute hand on the shoulder thing that you did when you were trying to maintain a sort of barrier between yourself and someone else, but a real and actual hug, the kind that he used to get from May and Ben. Tight and lingering, and maybe it should have been weird, he and this Peter hadn't really known each other for longer than an hour, but he knew him, and he knew where he was and he knew the weight that was on him.
Peter didn't say anything else, didn't offer any kind of words that might try and ease his pain just yet, just the hug. Peter would need more than that of course, a hug was just a start - but sometimes a start was the most important thing.