Losing a bet

My girlfriend and I made a bet: She didn't think I could watch another hot girl strip and play with herself for 30 seconds without getting hard. The deal was, if I don't get hard I get to have a threesome with her and the other girl. 

BUT, if I do get hard, I have to go to a club with her, watch her hook up with some random guy, drive them back to my place, and videotape her being his bitch, doing everything he tells her to do. Of course, I lost the bet ...

That Friday night we went to the club, and she started dancing with a lot of guys. There was one guy in particular, Craig, who seemed to take a real liking to her, grinding his crotch into her ass and reaching around to rub her legs and play with her tits. Then, as I stood nearby and watched, she turned around, put one hand on the back of his head, pulled him to her, and started full-on making out with him, right in front of me. She reached down and grabbed his dick through his pants, and then whispered something in his ear. 

They hurried out of the club, and I was forced to drive them to my house. On the way there, I watched them in the rear-view mirror, playing around and getting ready to fuck each other's brains out. 

When we got to my house, my girlfriend made me set her video camera up in my bedroom. She pushed him onto my bed, and told him she now belonged to him, and would do absolutely anything he said. He immediately made her strip, and strip him of his clothes too. He then told her to do something she hated doing, and wouldn't do for me. He told her to suck his dick, and she got down on her knees and went at it like it was her favorite thing in the world! 

She sucked and sucked, and when he tapped her head and said he was going to cum, she just grabbed his ass and sucked harder. He blew a huge load into her mouth, the first time she has ever let anyone cum in her mouth, and she opened her mouth to show the camera before swallowing the massive load. 

At this point, it was clear who was really in control, as my girlfriend climbed on top of him and straddled his dick. Then I had to hear her tell him "Your dick is much bigger than David's, I can't wait to feel it. I may never want his again." Then, with one quick plunge and a loud moan, she dropped down onto his dick, taking the entire thing into her pussy. She leaned in and passionately kissed him, and began moving her hips up and down, sliding his cock in and out of her soaking wet pussy. 

After about five minutes, Craig grabbed hold of her ass and shoved his dick deep inside her, burying another load somewhere no guy had ever cum before. Just when I thought this experience couldn't get any worse, she looked over at me and said "David, I don't need you anymore. Craig's dick is just so big that I want to be a slave to it. 

I want to be his personal bitch, her to please him whenever he wants it. So get the fuck out so I can keep fucking him in your bed!"