The agreement surprises Oswald, something that is painted fairly clearly on his face from the lack of will to hide anything in this moment. For a short second he wonders if Ed has somehow become a mindreader and what a blood-chilling thought that is even now. But it's not that, it's just Ed assessing--he's either managed to figure out exactly what it is Oswald is asking, or he's settled on a few very likely possibilities and deemed them all acceptable. Even that thought in the abstract, without letting himself imagine them in a fully-formed way brings a little bit of a colour to Oswald's cheeks.

I know you, he'd told Ed on more than a few occasions, though moments like this one remind Oswald that it's not a one-way street.

What he has in mind in particular is relatively humble in the grander scheme, not even something entirely new. Keeping his hands where they are (probably for fear of not quite knowing where else to put them for now, besides everywhere all at once which isn't physically possible), Oswald attempts to take a steadying breath before leaning up to draw Ed into slow, warm, kiss. It's still a little tentative, like he's afraid it'll disappear, or he'll wake up, or Ed will push him away, but it's an attempt at something more controlled than the last time that was more panicked reaction than anything else.

It's careful, appreciative, and vulnerable, but it's not really what anyone could call chaste by any means. There's still a lot to figure out and stumble through with trial and, though Oswald wants to try this again with what he knows now, wants Ed to know he takes this seriously and something he thinks is precious.