Act casual

Zack hurriedly fastened up his jeans, fumbling with the top button as he retreated backwards away from the bathroom door to flop down on his bed and pretend nothing had ever happened.

His heel collided with something, and Zack toppled backwards over his suitcase, landing on his back just as the bathroom door swung open, revealing his childhood friend standing there, lit softly from behind with the towel wrapped around her doing little to hide her curves.

"Zack?" she asked, with concern in her voice. "Are you okay?"

"Oh, uh, yeah, yeah, I'm fine. I just, uh, tripped."

"Okay, well I need to get dressed, so would you mind just... you know, just for a few minutes?"

Chloe was too polite to outright tell him to leave, but Zack caught her drift. She didn't want him seeing her naked. Zack felt the corners of his mouth turn up as he thought about the irony.