Frank ordered her to bend over.

Rachel checked her bracelet to confirm that her gems had turned green. "Indeed I am," she grinned, hitting the stop button.

"Take off your top and shorts," Frank ordered, pulling his shorts down. She looked in the mirror at the reflection of his huge erection and smiled.

She pulled her sports bra over her head, freeing her large tits from their tight confinement, and then pulled down her skintight yoga shorts and g-string panties, casually tossing them aside. "Now what?" she asked, smiling back at him in the mirror as he gazed at her perfect toned body.

"Bend over," he growled as he stood behind her.

She grabbed the treadmill's hand grips and bent forward, her large tits dangling like heavy water balloons.

Frank grabbed the blonde's round, muscular butt cheeks and spread them apart so he could watch the bulbous cockhead slide between her wet pussy lips and her pussy hungrily swallow his thick, veiny shaft.

"OOOOooooh yeeeeah," Rachel moaned as his cock stretched her cunt.

"God, you're tight!" he grunted, pushing the last inch of his manhood into her before slowly withdrawing. Just before the tip of his cock popped out of his snatch Frank slammed back into her, causing her tits to swing like a pendulum.

"Oh fuck yes! Fuck me!" she screamed, glaring back at Frank in the mirror. "God, fuck me with that monster cock! Harder!"

He held onto her wide hips and pulled her towards him with every violent thrust of his hips. Whereas other men his age would have already cum he was madly pounding away at her at a continuous tempo. It did not take long for her knees to weaken and buckle as her body tensed up and tremble from the orgasmic build up. She let go of the hand grips as she came but Frank held her up by grabbing her wrists.

"Ohfuckohfuckohfuck..." Rachel repeated as his cock continued to churn in and out of her spasming pussy. Then her head snapped back when he grabbed her ponytail, pulling her up so he could grab big handfuls of tit. He mercilessly kept pounding away at her cunt, bringing the trainer from one orgasm to the next without letting her recover.

"FUCK YEAH!!!" Frank howled, slamming balls deep into her cunt before releasing a torrent of semen into her womb. "FUCK. FUCK. FUCK YESSSS!"

Rachel let out an orgasmic cry as she came again.

"I'm still hard and I still need to fuck you again, sweetie," Frank whispered in her ear.

She grinned, impressed by his stamina.