Do Tantric Yoga

I shouldn't surprise you, but Jen walked past you completely naked, towards the deck. Her silky skin shiny with the sunscreen she just applied all over her body. You realize that, as your dick receives a rush of blood, just like the two of them, you also did not reach any sort of satisfaction yesterday. Seeing your girlfriend waltz nude towards your Uncle gives you the quickest erection ever. Rick stands up and takes her hand, guiding her out of the lounge, out to the deck, leaving you alone.

Rick: "Come on, nephew, join us!"

Jen: "Yeah baby, it's gonna be fun!"

You: "Uh, yeah..."

You sit there frozen for a little while, watching while your naked girlfriend exits the lounge with your naked uncle. He gives her a little spank on her perfectly round, smooth butt cheek, causing her to yelp and giggle.

Jen: "Riiick..!"

Rick: "Sorry, can't resist that ass...."

Jen just giggles, and then they're gone. Silence falls upon the lounge as they door swings closed after them. After about five seconds of silence, you panic, stand up quickly, and rush to the door.

Oh my god, they're both naked, and alone. What if they have sex!?

You rush to open the door, but pause with your hand on the door handle.

What if Rick is already fucking her. Am I ready to see that? No...Jen wouldn't do that...Rick wouldn't do that...would he?

You stand there frozen with your hand on the door, realizing that you're afraid of opening the door. Afraid of the possibility of your girlfriend having unprotected sex with your uncle. Afraid of....

Jen: "oommmffff....Jesus....Christ...!"

You hear Jen's muffled groaning through the door.

Rick: "Ohhh...yeah, that's tight...!"

That proves it. They're having sex.