No, you can't take part in this.

"I, uh...no. S-sorry," you say, a bit pathetically. You're turned on, but also so thrown by this offer that you don't really know what to do. Seems best to just...not have sex with a random couple you ran into. In public.

Jared snorts. "Whatever, man. Your funeral. Back to work, Katie."

"Ahh!" Katie lets out a little gasp as Jared drags her head by the hair back to his dick. She whimpers but takes it back into her mouth, gagging as she goes all the way down to the hilt. Jared glances back at you.

"Well, Luke, you might as well beat it if you're not going to accept my hospitality. Didn't anyone ever teach you good manners? When someone offers to share with you, you say yes!" Jared sighs, holds Katie's head still, and aggressively fucks her for a few moments. "Ah, well, what d'you know," he says over her coughing and sputtering. "You'll change your tune after a few days, I'm sure..."

"Is she ok?" you interrupt. Jared laughs.

"Well, Katie? You ok?" he asks, roughly pulling her head up and off his cock.

"Ahhhh..." Katie is looking dazed, but oddly sexy, with mingled drool and precum hanging from her lips. "Y-yes...I'm fine...I'm happy to serve."

"Good girl." Jared slaps her ass and she leans down to keep sucking him. "Go on, beat it, freshman. Don't you have an orientation thing to get to? That will probably make things clearer..."

Shaking your head, you slowly back away, then turn to exit the garden. What a weird couple...are all college kids going to be this brazen about their sex lives?! You wouldn't have expected it in such a conservative place. As you head away (you do have to go to the actual orientation), you hear a snatch of their conversation.

"Good girl, Katie. You haven't gotten any worse over the summer!"

"*gluck* Thank you, Jared. M-may I please take your cum...in my mouth...?"

"Nah. I wanna see how tight you are after being away from me. I'll cum in your ass. Get that butt up!"

"Oh God! Y-yes, Jared..."

Katie's moans fade away as you head out of the walled garden.