An MMF threesome is happening

You see a cute little brunette being double penetrated by two guys! She's straddling one, with his dick in her pussy, while the other is kneeling behind her with his dick up her ass, her hand spreading her ass cheeks apart. The guys seem to have developed a steady rhythm and are slipping in and out of their respective holes nearly in sync.

Now that the door is open, more than just the girl's muffled cries can be heard; the two guys are grunting with their effort, the bed is squeaking, and the sounds of skin slapping together also fill the air. The sounds and scene before you rush blood to your member and you find yourself reflexively rubbing your cock through your clothes.

Much to your pleasure, the group begins talking and you quickly learn their names. "Yes! Yes! Yes, Tyler! God your dick feels so good up my ass! Fuck my little pussy Evan! Give it to me! Ungh! Ungh!"

"Fuck Bethany, your ass is so tight!" you hear the guy fucking her ass, who you now know is Tyler, say.

"Fuck, your pussy is just as good!" Evan moans out. "I don't think I'm gonna be able to last much longer!"

"Don't fuckin' cum inside me Evan! I'm not on the pill!" you hear Bethany say with some panic in her voice "I'll let you cum in my mouth! I want another taste of that dick anyway!" she says between panting and moaning, then rolls to her side to let Evan up. Tyler manages to keep himself in her ass and rolls along with her, ending up on his back on the bed. Evan seems perfectly fine with cumming in Bethany's mouth, rolling out from underneath her then kneeling in front of her, bringing his dick to her lips. She grabs him by the base then takes him into her mouth without hesitation, slobbering all over his cock head.

"Yeeaaah you dirty whore! Suck your pussy juice off my dick! You taste good, don't you!?" taunts Evan, his hand on her head, holding her in place while he pumps his hips into her face.

"Mmm hmm!" is all Bethany can manage, breathing through her nose and apparently perfectly fine with being called a whore.

It isn't long before both Tyler's and Evan's grunts and moans become louder and closer together and you can tell they aren't going to last much longer. Just as you finish that thought, Tyler speaks up. "Oh shit, I'm close. You ready to paint this bitch with our cum?" he asks Evan.

"Oh yeah bro! Let's do this!"

Tyler crawls out from under Bethany and kneels between her legs, feverishly jacking himself off, while Evan pulls his dick free from Bethany's mouth and does the same. Tyler was apparently a little closer to the brink as, within seconds, he begins shooting his load onto Bethany's stomach. Evan isn't far behind, depositing his seed into her mouth before Tyler is even finished. The threesome's groans of pleasure fill the air as Bethany seems to be getting off on being cum on just as much as when she was being fucked.

Once they've squeezed out the last of their cum, the two guys collapse onto the bed with Bethany and attempt to catch their breath. With the show now over, you don't feel like sticking around risking the chance of getting caught, so you quietly close the door and pull the key from the lock. You slip it back into the book it came from, then make your way back down the hall, adjusting the bulge in your pants as you go.