Steve couldn't keep it from him, but he also didn't feel as guilty as maybe he should have. Because it hadn't been like that, it hadn't felt romantic it had just felt like an ending. But if he was going to be in this completely, it meant not keeping things to himself even though he wanted to.
Tony was up and pacing and Steve ran both his hands through his hair as he watched him. Even if he wasn't angry, it wasn't good and Steve really did feel like he was never going to get anything right. It was impossible to explain it, to have anyone understand what it was like to have a relationship like he and Bucky did because no one had any life experience in that. So he couldn't fault Tony for not getting it and he wasn't wrong in being less than thrilled with Steve kissing someone else.
"I'm not proud of the timing and I hate that I did that to you. But I swear nothing like that will ever happen again," Steve said seriously. Things hadn't been that smooth to begin with and he knew he'd gone and made it a heck of a lot worse but he'd been so in the moment, the goodbye of something so important that he hadn't made the best choice. Steve could be sorry and wish things had happened differently and still know it had needed to happen.
"I'm pretty good at getting in my own way when it comes to being happy," Steve said.