The secret routine between Derek and Stiles had become an addiction. Every single day, she found herself in that locked gym room, her body given to him without hesitation. Nobody had any clue—the staff thought she was simply training hard, while in reality Derek was the only exercise she craved.

This day was no different. Stiles was straddling Derek on the thick workout mat, his cock buried deep inside her as she bounced wildly, tits spilling out of her sports bra, sweat dripping from her temples. Derek groaned beneath her, gripping her wide hips as she slammed down on him again and again.