He takes you home to be his sex .

Jake just says "Sir, I paid for her fair and square. So, I'm going to keep her."
The older man chuckles "Well, you have fun."
Jake grabs your arm. Instinctively, you pull away from him. This prompts more laughter from the rest of the room. Jake isn't laughing with them this time. He grunts and says "Oh for the love of- Go To Sleep."
As he says this, the room starts to spin and your body feels heavy. Soon, you black out. Again.

You awake with a start, jerking up from a cold marble floor. You're... Somewhere else.
It's an apartment. A really nice apartment. Modern design, all of the latest appliances and a fully stocked bar set. Making use of the bar is Jake, who is mixing himself a drink. "Oh, good, you're awake."
You must've been out for a while because it's nighttime now. The city always looked so beautiful at night, the lights glittering like perfect jewels.
"Where am I?" you say, your voice raspy from dis-use. "My place." Jake replies, "Penthouse of The Sharp building. It's one of the most expensive buildings in town. I could quote some figures at you but there's no point. You don't need to know that stuff. All you need to know is that you're gonna be staying here for the foreseeable future."
"What do you mean?" You say, warily getting to your feet.
Jake says "What I mean is: You belong to me now. You are my property. And as my property, I say that you should stay right here in this apartment so I can do whatever I want to you whenever I want."
You take a few steps backward. "I don't want to do that. I want to leave."
He looks at you with disdain. "It doesn't fucking matter what you want."
You sputter out "But- I-" and then quickly run for the door. You have to get out of here, no matter what!

You're halfway to the door when your legs suddenly give out beneath you. You crumple to the floor in seconds. You try to get back up but your legs feel like limp noodles. "What? Why can't I move?"
Jake pads over to you. He's changed out of the suit you saw him in back at the office. He's now wearing a silken robe, firmly tied at the waist and trailing down to the floor. "Y'know, Nikki, I don't remember you being this stupid. Let me explain it like this; You are physically incapable of doing anything that will make me sad. You can't hurt me, can't run away. Can't hurt yourself, either. Just in case you were thinking of taking the easy way out."
He squats down in front of you. "So, in order to remind you of that, I got you this."
He leans forward and straps a collar around your neck. It's a simple thing. A black leather band with a metal clasp, wrapped around your neck. Just tight enough not be **** but still tight enough to remind you that it's there.
"Cute, right?" Jake says with a smile. "And I'm just going to say this one thing to be sure. You are not allowed to remove this collar for any reason whatsoever."
The sound of his command hits your ear like no other sound has before. It's almost hypnotic in a way.
"Ngh- Yes, Sir." You clap your hands to your mouth. Oh my god, was that really your voice? That did not sound like you. The old you, anyway...

Jake almost grunts in satisfaction. "And now, you and I are going to... get to know each-other better."
You let out a squeak as Jake grabs the collar and starts to drag you across the room. "After all, it's been a long time since college. We've changed as people. You more than me, but still."
He stops in front of a plush armchair. The chair is right across from a fireplace and the flat screen TV that's mounted over it. He grabs a remote and turns on, not the television, but the sound system underneath it. Some jazz song you don't recognize starts up.
"And the best way I can think of to do that is me letting you know about some of the things you're going to be doing for me. I'm a nice guy, so I'm going to start you off easy."
He undoes his robe, dropping it too the floor next to you. He is completely naked now, his toned body on full display. His cock, a full 11 inches, swings free. He takes a seat in the armchair and looks down at you.

"Suck my cock."