Don't let Ana cum--tease her instead

You quickly remove your mouth before Ana can get release. "Not yet," you say, and she groans in frustration. "Let's make this last a bit." You wrap your hand around her length and glide it up and down, squeezing lightly ever time you reach the engorged head. Her shaft is slick with your saliva and residual sweat.

"C'moooonnn," she growls, pumping iron a little more forcefully.

You return her cock to your mouth, sucking hard for a few more seconds before releasing it again with a pop. You smirk when Ana huffs loudly.

"I'm warning you", she says with a dangerous glint in her eyes.

You laugh and resume the blowjob once again. Just as you feel her tensing up, though, you let her throbbing member slap back against her stomach. "Mmmmm, nope," you tease.

"That's it," Ana says through her teeth. She places the weight back on the rack and grabs for you.