Clingy was good, there wasn't anyone there, it was just them and Steve liked clingy when it was Tony. It was certainly returned, Steve taking his hand and entwining their fingers.
Steve hadn't really considered that their marriage was one of love and togetherness but not like what the two of them shared. Because there was nothing platonic about them, there never had been really even if they'd been better at pretending. Tony made him weak at the knees, he always would.
So maybe even in the world they'd come from, there was a chance for them. Maybe things could be different and Tony could survive and they could be everything they'd supposed to be. Steve leaned down to kiss him, his arm snaking around his waist, maybe to show a display that was nothing but platonic or maybe because kissing Tony was his favourite. "Maybe I'll get a chance to tell her then."