Tell Kara that you've changed your mind, and head home

You can't do this. It's just too wrong. It would be the ultimate betrayal to Adam.

"I can't do this, Kara. I'm sorry."

Kara looks both pissed and confused.

"What?! But--"

"Adam -- your brother -- is my best friend. If he found out about this, it would kill him."

"Whatever." Kara spits out. "I guess it's all just talk at school. Your whole stud reputation is bullshit. You're pathetic."

Kara leaves in a huff. You can tell she's feeling rejected, but her words really sting.

You text Adam and tell him you're not feeling well. You head home, tired, horny, and bummed.

A few days later, in the locker room after a game, the quarterback, Matt, is regaling a few of your teammates with the tale of his latest conquest. Matt is the quintessential All-American Abercrombie frat bro, and you know girls are always creaming themselves over him. His reputation with the ladies nearly matches your own, and because of that, the two of you have sort of a rivalry. He has a tall, built body similar to yours, and you know he's also packing a fuckin' crowbar in his pants.

"Holy SHIT, brah!" He shouts to no one in particular, all the guys hanging on his every word. "The fuckin' bitch had the fuckin' TIGHTEST, HOTTEST, WETTEST puss lil' Matt has ever busted! Fuckin' prime virgin cunny! And she couldn't get enough! Ain't never been with a whore as wild - she took my schlong in every fuckin' position. Even let me screw her ass! Dudes, she couldn't get enough of my big cock - she was screamin' and fuckin' orgasming every 5 minutes. Never had as hot a fuck as that in my life!"

The guys all hoot and holler, giving Matt high fives.

"Who is he talking about?" You ask one of your teammates.

"That sophomore chick, Kara. The hot redhead."

"Dude!" You yell out loud. "Matt, Jesus - that's Adam's sister!"

Matt just laughs at you.

"Bro, don't hate on me just because you couldn't get it up with her."

"WHAT!?"

"Kara told me everything, how she wanted you to fuck her and you couldn't even get hard - and ended up runnin' home like a pussy."

By the end of the week, practically the entire school is talking about how you can't get it up. Random losers are coming up to you in the hall and jokingly asking if you want some Viagra. Even worse, the chicks at school won't give you a second look. Your reputation is ruined. Why didn't you just fuck Kara when you had the chance?!