Admit he's defeated, but keep going.

"You are right, i cant handle you. This feels too good... but please keep going." Tim pleads.

She slows down her **** to a standstill and replies. "Only if you promise to go another round if you took a placebo." Jenna answers.

"Yes. I promise, anything you want... just make me cum for you. " Tim answers.

She relaxes the grip of her cheeks a bit, and bouces up and down, a few times. That all it takes.