Sylvie moves quickly, pulling his cock out and swallowing him down, and Bucky lets out a low grunt as he tips his head back against the brick. She's making quick work of it, getting right to the point, and Bucky doesn't bother trying to hold back.

He looks down at Sylvie, watching as her head bobs, and unlike the other times that he's been sucked off in an alley, his only concern is that someone might stumble upon them. He isn't feeling shame or fear, isn't tied in knots over what this means for him. Even if Sylvie was a man, he wouldn't be feeling those things. She and Loki both have helped him so much in that regard, learning to accept himself as he is.

Sylvie is so good at this, and has learned his body so well, that it doesn't take long at all for Bucky to find himself on the edge. He breathes in raggedly and thumbs at the corner of Sylvie's mouth, feeling where it's stretched around his cock. He huffs out an amused breath, overwhelmed by how good this feels-- not just the blowjob but all of it, just being with her.

"You're so fucking wonderful," Bucky pants out, sweeping Sylvie's hair back from her face as he rocks into her mouth, biting his lip as he looks down at her. "I'm close, sweetheart."