To your surprise, Melissa sits on your side of the table. Gene doesn't seem to mind - or notice - though, so you ignore it. "Hey, babe, can you get me a coffee?" Melissa asks Gene. She smiles sweetly. "You know what I like."
"Of course," Gene said, smiling back at her. He stands up and heads for the counter. When you turn back to Melissa to ask her about Gene, you realize her hand is sliding up your thigh.
"What are you doing?" you demand, even though you can feel yourself growing hard at her touch. "Gene is right over there."
"Oh, come on," Melissa practically purrs. "Like you don't enjoy it." Her hand has reached your crotch now and started to rub through your jeans. "Besides, Gene knows he can't give me...everything I need."
You realize that Melissa is not as appreciative of Gene's vagina as he assumes, and deduce that in this reality Melissa still has her regular desires. She might be Gene's girlfriend, but it's clear she's keeping you for a little on the side.
"Melissa, I don't think we should-"
"What's this?"