Her ex-boyfriend.

Gerard was the last guy to date Nastasia.
He wanted her to get implants.

After they broke up, she did just that.
Partly to spite him, but also to get 'better' men.

Now Gerard is standing in front of her in the Basement.
She's crouched down to cover her tits.

"Hi there. What happened?"
She yells at him through the gag.
"I can't understand you, sorry. Sit down and I can help get you loose."

Nastasia looks at him.
She doesn't want him to see her tits.

"I've seen your boobs before. Remember the time in the Water Park Bathroom.
We almost got caught."

She grunts in defiance, but soon her pride falters.
She sits back on the stool and looks up at him.

Her big, fake tits are now fully in view.
He smiles.

"I told you'd look great with those. I guess I'm not 'the dumbest man in the last decade,' am I?"
Nastasia grunts angrily in response.
"I'm on it. Relax."

He walks to a table and gets a box cutter.
His stare lingers yet again.