Sure, why not.

Later that Friday, Zach picked up Amanda at her place. The two of them drove about 15 minutes to the house where Amanda was told to party was.
"This is it." She said. "Leo's House."
Leo and Zach were OK friends, even though Leo was kind of a rebel. He always would throw a party when his parents went out of town, and they went out of town a lot. Leo was basically borderline rich too, so his house was HUGE.

Together, Zach and Amanda went to the mansion, and Leo was right there by the door. "Amanda, so glad you could make it!" He was screaming, with his voice that kinda sound like what you would expect a surfer to sound like. "Who's this?"
"Zach, my boyfriend, remember?"
"Oh, yeah, Zach! What up dude!?!" They fist bumped.

Amanda and Zach partied. Hard. Or, at least, Amanda did. She got nearly wasted, while Zach made sure she didn't fuck anyone else. He knew the app would probably keep her away from other penises, but he just wanted to make sure.
"Babe." Amanda tugged on his arm. "Come on, I have someone you have to meet."

She grabbed his hand and walked him to the upstairs area, passing plenty of people from his school making out with each other. Amanda pushed everyone out of the way until she came up to 2 girls talking to each other. "Laura!" The one girl turned away at the sound of Amanda's voice.

Zach knew who this was. Laura Graves was one of Amanda's best friends. They were almost like the same person. Laura was short, shy, and quite the cutie. With her Tight round ass and medium size breasts, she would be the most perfect fuck ever. Problem is, Zach had better chances of getting struck by lighting than fucking Laura.

"Laura!" Amanda said again.
"Hey Amanda! What's up?" Laura responded.
"You wanna fuck Zach?"
"What!?! No way, he's your boyfriend!"
"I don't care, just do it!"

As two of them when back and forth, Zach had an idea. His app allowed him to change rules also, Why make BOTH girls his?"