Tony & Darcy
He was getting dragged to the...ok, well at least this was private.
Tony immediately started gesturing around with his hands as soon as he started talking, which was a sign that his anxiety was shifting into a code red she's ready to blow cap'n combustion level.
"What? No! No, Jane's fine. I'd know if she wasn't since Bruce and I did the nanobot gene therapy thing and Jane's all clear. It's not that. Jane would've told you by now anyway if it was. This' a personal thing. You and me. Just between us." He held up both hands like she shouldn't shoot the messenger. "Don't get mad. Don't freak out," said the guy who is freaking out. "Because I'm about to pull a massive Darth Vader right now. And I can't believe I'm doing this in a coat closet, which is okay privacy-wise but...."
Deep breath.
"Darcy, I'm your dad."
He stopped gesturing and stared at her, closely, like he was looking for signs of a total melt down. It was the same sort of look that he gave Bruce after poking him with pen sized electric prod, soon after meeting him for the very first time. Will it blow up? Will it not? Gonna find out, for better or worse.