Tony didn't really know how he felt, if he was being honest. He'd been sitting on the information - albeit, without the full details and only a slight real inkling of how things played out - for a few days now. But reading about it, having others reacting to the news, cemented things in a way that it just drifting around in his head had not.
In some future, that same future where he had the universe's most perfect little girl, he was dead. They'd restored those who had been lost across the universe, and Tony had gone into battle, had wielded a gauntlet of infinity stones to make sure that those people stayed and everyone else he cared about lived. He'd won. He'd beat something that he'd spent nearly a decade being scared of. And nearly everyone lived.
Although there was some part of him that felt hollow about it, a blank space where he thought emotions were meant to go, there was another bit that felt nothing but relief that he'd finally gotten something right.
It all sort of shifted though, to the buzz of low grade anxiety when he finally made himself come home and met Steve's eyes. Because this was the start of where things got mixed up and confusing, where he started feeling bad for upsetting and leaving people.
God, he was glad he didn't have to say anything first off, didn't have to do anything but let himself be pressed up against the heavy wood of the door, wrap his arms around Steve's neck and kiss him back like it was the beginning to a really sincere apology.