[His mood is liable to swing wildly back and forth when things catch his attention. Right now the one thing worth doing is, obviously, flirting with him. Which is always rewarding and never a bad idea. Which is why the very next thing out of his mouth with an attempt at a seductive smirk that might be marred by how drunk he is-]

You could put something in me instead.

[And he thinks that's a great line. He also thinks Steve thinks that's a great line because wow there goes his shirt and Tony's hand lifts in a wobble, like the weight of his entire arm is too heavy, gravity turned up a bit, and plants his heavy hand against Steve's chest. The touch is less flirtatious and he might almost immediately forget, again, what his plans were. Even if he had any.

Because instead of feeling him up he kind of just holds steady there against Steve's heart. Enjoying that deep thrum underneath his fingertips. That heart is his, forever they're very agreed now, and he'd do anything to protect it. It catches him a little that Steve must be feeling sentimental too and he tries so hard to parse through everything being said and not say something stupid in return- because he does realize he's very drunk.]

You have a knack for always saying the right thing at the right time. And not just- not just your Cap speeches- though I think we agree you're great at rallying. But sometimes you'll just look at me and say something that makes me feel like-

[His eyes squint in concentration because he's really trying okay.]

-I couldn't be loved like anyone loves me- like you love me- there's a pre-you and a post-you and I'm settled. I couldn't go back.

[Nope. None of that made sense. Probably. But he tries one more thing.]

Don't worry about the vows so much. Whatever you end up saying will be the thing I was waiting to hear. That's how it always is with you.

[...was that better? He's at least smiling like it was.]