"I'm falling in love with her."
"Oh, that's nice, that really is." She watched him sit up, get up, finding his clothes. "I'm glad."
"That means that this stops."
She frowned. "What? Why?"
He turned to stare at her. "Why? Because this is cheating as it is, let alone -"
"This is just physical. Let her have the emotional and let me have the physical." She got out of bed, sauntering towards him, smirking when he turned away. "There's no reason to stop."
"I really feel something for her. I don't want to hurt her."
"You aren't hurting her. She'll never know - you won't tell her. There's no reason for this to stop." She scowled. "I'm enjoying this, and you can't tell me you're not."
"Do you remember when we were friends?"
"We are friends. With benefits. Remember?"
"No. No, now we're just...benefits. And it doesn't feel like that."
"Ugh, you're such a girl." She moved away from him, going to find her own clothes, slipping her camisole over her shoulders. "Emotions and feelings - it's just sex."
"You are...awful. If this were a real relationship - "
"It is a real relationship, it's just not the one that the world expects us to have." She shook her head. "Fine. End this, see if I care. It won't be too hard for me to find someone else anyway."
"No, I don't think it will." He dressed quickly enough, not wanting to look at her, leaving without saying goodbye.
It was something they should never have begun - that was the only way there was a happy ending. He'd thought he knew her - clearly not. He should never have done this.
He wished he could pretend that he wouldn't miss her, walking towards a girl he thought he loved.