Immediately!

You slowly enter her pussy, knowing that you're the first man to be inside of her in quite a while.
She moans.
You fill her up and prepare to start fucking her when...

She cums!
Not a little one either- a big one!

"I appreciate the compliment, but I just started," you say sardonically.
Jenni tries to avoid eye contact with you, but it's not easy.
"Oh, I see. This is why you didn't want to agree- you love it too much."
Jenni continues to try and look away.

To test her, you start to pull out.
Reflexively, she pulls her feet in, trying to block your exit.
You look at her.
She looks away.
You grab her head and make her look at you.

The moans pick up again as you fill her back up and start to fuck her.
She hates the lack of control.
She hates you.
She loves this.
She loves to be fucked.
She loves to be fucked in tight bondage.

You fuck her for the next 10-15 minutes, taking short breaks where you grind inside of her.
She cums many, many times.

Finally spent, you cum inside of her.
You reach forward and remove her ball gag.
You wait for her response (if any).