After watching a little more, Jon decided that maaybe making his sister his girlfriend may not have been a great idea. The truth was, he was a little uncomfortable about it, which was understandable, since she was family. Jon certainly wouldn't want to do this with his mother or his aunt.
"Zoe, could I talk with you for a moment?" Jon asked.
His sister stopped kissing Sarah and turned towards him, smiling. "Sure, Jon." She got off the bed and walked with Jon out of the room and into the adjacent bathroom, leaving Sarah and Karyn to make out with each other again. Apparently, they really liked to do that.
Jon closed the door and turned to his sister. "Uh, Zoe. I ..."
Zoe immediately plunged her hand down Jon's boxer shorts and began to massage his penis.
Jon quickly pulled her hand out, which resulted in Zoe pouting. "You don't like it when I do that?" she asked.
This was getting too weird. But Jon certainly couldn't say it wasn't his fault. "Zoe." He sighed, then said "You're not my bisexual girlfriend."
In a blink of an eye, Zoe was gone, presumably returning home. Jon was alone in the bathroom.
When he came back into Sarah's bedroom, Karyn and Sarah weren't kissing anymore. "Where did you go, baby?" Sarah asked.
"I just needed some air," Jon said.
"We'll give you all the air you need," Karyn said, grinning.
"Come on, Jon. We've waited long enough. We want some sex," Sarah pleaded.
"Yeah," Karyn agreed.