Betty's sister, Polly

"Oh my God!" Betty screamed. She quickly pulled up the sheets to cover up their bodies. She recognized the voice all too well. It belonged to her sister, Polly Cooper.

"P..polly! Whh..What are you doing here?" she stammered, her cheeks flushed red, feeling embarrassed at being caught by her elder sister.

"I told mom and dad not to tell you that I was coming over. I wanted to surprise you. I had some free time left over from my last TV assignment so I thought I'd drop by Riverdale. I thought it'd be great that we could spend some time with each other, just the two of us sisters, with mom and dad having that trip of theirs. Imagine MY surprise when I come home and find that you have company..." Polly said with a smirk.

"I..i..." Betty stammered again, not knowing what to say. Archie sat quietly beside her, not knowing what to say either. In their minds, they knew they were in such big trouble.

"Hey, hey, relax, kid. I happen to approve wholeheartedly," Polly said with a broad grin. "I thought it'd be good to scare you a little bit."

"You do, Polly? You really do?" Betty asked with an excited squeal. Archie quietly let out a sigh of relief.

"Sure, I do, honey," Polly said, as she slowly walked over to Betty's side and gave her sister a hug. "After all, you're just a normal, hot-blooded girl just like me and you have to take care of your natural desire. To be honest I never thought you had it in you. I mean, fucking a guy in your own bed!"

Betty blushed again, embarrassed at her situation.

"S..so you're not going to tell mom and dad? Thank God! I owe you big time sis! Anything you want, just let me know!"

"Well, there is one thing...." Polly said with a broad grin.