There's a brief moment where logic tries to kick in, trying to remind him that it's too soon. That he shouldn't be saying this, that he should have thought things through. But, the thing is, he doesn't really regret it because he had said the truth. After the morning they have had, and the things that Tony has already shared with Steve - and after growing as close as they have in the time they have been together...

No, he doesn't regret it, that's why he doesn't take the words back. If anything, he just holds onto him a little tighter as he looks up at him.

"You did," Tony agrees with a soft smile. "Guess you weren't the only one."

Because, well, it's not like that love has just started to develop. It has been growing and settling in, mostly without him even noticing. Steve really has gotten under his skin in ways that he couldn't have prevented, but as he looks up at him...he realizes that he wouldn't have wanted to. Not if it meant feeling like this, and being this happy.

"I love you too, sweetheart," he whispers before pressing a kiss against the side of his neck. "This has been a pretty great morning, you know."