"Tell Gavin if he gets you off..." / Zack (Warning: M/M)

Zack watched Gavin ease out of the bedroom they shared with Chloe. He took a few tissues and wiped Gavin's stroke lube and cum off his hands. Gavin had left his device open with the spy video of himself and Hannah still up. He tossed the tissues into the bin and sniffed the air. He'd have to take out the trash and leave the window open or Chloe would get some definite ideas about what went down this afternoon.

He lay back on the bed where he had finally made it with his old crush who was his big sister's best friend AND a former cheerleader captain. Hannah. She was more than he had imagined. He swallowed. His sister's college roommate and lover. He flashed back on what he had walked in on, what she had told him to sit back and watch. Hannah, harnessed up with a strap-on dildo, plunging it in and out of Zack's sister's pussy. Taylor, his sister. And Heather, lying on top of Taylor, sixty-nining her. What Heather had said. "Yes! Lick me there, Taylor, I'm almost there!" What Hannah had said. "Cum, Sugarbees! Right in front of your little brother, isn't that awesome?"

And he'd watched as Taylor's pussy juiced around Hannah's big black strap-on as his sister got off in front of him with Heather's pussy grinding into Taylor's face.

A few years ago Taylor and Hannah used to joke about Zack being their mascot, because he liked to hang around with them and hear them talk about school and other girls they knew. God, I talk a lot, Hannah had said. While he used to fantasize about them, well, mostly Hannah, the reality was more than he'd ever imagined.

And more yet.

He lay there on the bed, his second erection of the afternoon still throbbing, still recalling the feel of Gavin's hand squeezing down on his cock as Gavin shot his load, spurting through Zack's fist, Zack's fast hand strokes driven by Hannah's grip.

Have you ever had a chance to watch people having sex together before? Hannah had asked Gavin as the three of them watched Gavin's spy video of Zack and Hannah. Your friends or someone you know? It's a special, precious thing.

And Hannah's voice in his ear before she left. "Tell Gavin if he gets you off, Zack, we can have another party. A longer one. Bonus if I get to see it."

She'd left it up to him to make the next move.

The door opened a crack. "Um, it's me," Gavin said. "Just me."

"C'min," Zack said.

Gavin closed the door behind him. He surveyed the room. Zack was lying on his bed, still naked and hard. "Oh," Gavin said. "Guess I should grab my game box and park in the living room?" he said.

Zack cleared his throat, his tongue itching to pass along Hannah's message, but feeling unsure.