Wally carries the rings at Barry and Iris's wedding. Hal definitely does not shed any manly tears from his position as best man, watching Barry and Iris smile bright enough to light the entire church as they lose themselves in each other's eyes.
He just. Knows how hard it can be to keep a relationship going, what with the… hero thing… and Barry and Iris will be perfect together forever in all the right ways, he just knows it.
There was always the nagging undercurrent of tension, this knowledge of maybe-maybe-maybe, this worry that something would happen, that someone would die or be kidnapped or go into a years-long coma…
But they were married.
It had happened now.
No matter what the universe threw at them later, no matter what horrors it decided they needed to endure, they could keep this one moment, this one good day, and know that it had happened.
Barry and Iris Allen.
The words flow smoothly, like they were always meant to be together, and suddenly Hal finds it hard to imagine them any other way.
Wally is grinning his fool head off, squirming constantly as though that would somehow move things along or give him a better view.
When Barry had showed up in Hal's apartment one day, bow tie askew and hair ruffled, and had announced that he had actually asked Iris the big one, and she had said yes… Hal had barely believed it.
When it finally sank in, Hal had launched himself into the air, performing elaborate flips below the ceiling of his living room while Barry laughed manically and never reprimanded him once about the tell-tale green glow of his ring.
Hal remembered crushing Barry into a hug as he knocked him over the head with a playful fist, ribbing Barry about How did you ever convince her to slum it with you? And Barry had laughed, nearly incoherent with delirious ecstasy, and Hal couldn't begin to understand how this man had managed to make it through an entire proposal.
The way Iris would tell the story, he hadn't.
So here Hal was. In this one perfect moment stretching into eternity.
This one perfect, untouchable moment, no matter what might happen later on.
They had this.
They would always have this.