Barney felt Billy look away, and he pulled back enough to glance over at Robin. He sucked in a breath, shifting slightly. His pants were getting uncomfortable. God, it had been too long since he'd seen Robin naked.
"You can look," he said to Billy, reaching up to cup his cheek, turning his head gently. "God, Billy, look at her. She's so hot." His other hand kept stroking Billy's leg, moving his hand a little higher each time.