Bucky / Clint
To be fair, Bucky had always made himself someone that Clint was happy to see. Not always because he was in a good mood (because he wasn't, not always) but because he was honest. That went a long way. And yeah, whatever it was they were doing here, he definitely liked doing it.
Clint bit at his bottom lip and smiled, not really shy (because he didn't have it in him to be shy) but just because he was quietly pleased with the feeling of Bucky's lips against his skin. "Yeah?" he asked, turning his head to catch a kiss on the lips, too. It was his birthday, he was allowed to be greedy.