Cum with Sarah while watching Grace and Tori.

You keep watching the show outside. It's one of the hottest displays you've ever seen - they've started making out and Grace is now playing with Tori's tits - and you also don't want to make eye contact with Sarah as you ask your next question.

"So, you know that blowjob you promised me?" She nods - also still looking out the window - and you continue. "What if we did it right here?"

It takes her a second to process that. Finally, she looks over and says, "You want to watch them while I make you cum?"

"I think it would be pretty hot."

She shrugs. "I mean, sure. How often are you going to get this chance, right?" She leans in and kisses you. "Just don't make a habit of thinking about other girls when I'm getting you off, okay? One-time thing."

"One-time thing," you agree. She nods at that and gets down on her knees. She pops your cock in her mouth and begins working it. You're already fully hard from what you can see outside. And things just get better as you watch. Tori re-positions herself so that she's in front of Grace. More of her is underwater now and you can't see her tits anymore, but you can see her shoulder working as she - presumably - thrusts her fingers in Grace's pussy. Apparently, clit play alone wasn't quite enough for Grace. She has her fingers dug into Tori's hair as she gets finger-fucked.

While you're watching that, Sarah continues to alternate between bobbing her head up and down on your cock, and running her tongue along the length of it. She clearly knows the basics, but her technique could use some work. She's enthusiastic, though, and with that - combined with the show outside and the show right in front of you - you feel yourself getting close to your own climax. Sarah already said you could come in her mouth, but you're not sure that's how you want to finish.