They were to an edge but still in public, and something like shame flashed up Frank's spine but he was helpless against it, the sight at his feet. Billy was gentle and eager, and Frank didn't want to share that with anyone else. It was easy to try and make them as unobtrusive as possible--but then, nobody seemed to notice or care one way or the other. There was plenty else going on to distract them.

Frank was narrowed to just this. He ran his fingers into Billy's hair and groaned softly, narrowly avoiding the urge to fuck into his mouth while he luxuriated in his activity.