She has an orgasm

As the steamy haze builds you try to ignore it, but eventually your eyes succumb to the curiosity and you watch her masturbate.

One hand is gliding across the condesation and sweat around her breasts, squeezing them in the moments her body tenses. Her other hand is between her legs with two fingers inside. You can tell the fluctuates in the sensation from her hand grasping her tit, her legs clenching shut, and her head tilting forward.

"Mmmmm....yeah.... mmmmm..." she moans and wines through the pulses of sexual heat in her body. You can see her vagina clear and glistening when her legs flare open for about 20 second each pulse.

Your cock is pulsing too with anticipation, begging for you to stroke it. Some how you manage to hold back.

You hear the moans and whines amplify slowly and see her body get more tense.

"Oh yeah... YEAH! YEAH! MHMM! YEAH! mmmmmMMMMMMMMM! Oh! Yes! YES! YYEESSSSSSSSSSSSSSSS!" She wails, her body convulsing in the orgasm.

You close your eyes again to focus on not stroking your cock.