The fitness girl, her body glistening with sweat, approaches her trainer with a sultry smile. She's been watching him, his muscles flexing as he works, and she's decided she wants a different kind of workout. She drops to her knees, her blonde hair cascading down her back, and takes his cock into her mouth. He's already hard, his dick throbbing against her tongue. She sucks him off, her head bobbing, her hand working his shaft. Behind her, her brunette girlfriend watches, her fingers playing with her own pussy. The trainer's cock is huge, and the blonde struggles to take it all, but she's determined. She pulls back, spitting on his cock, her saliva coating it. She looks up at him, her eyes filled with lust, and says, "We're going to fix this, aren