College sex video

I am in college and am good with video and editing and I made some promotional videos for the college and am kinda known for it. Anyway this girl I know comes to me and asks me to video her having sex with her boyfriend and wants to know what it would cost. I told her a hundred bucks so she says thats cool. She said she wanted me to film it on an SD card and that I would have to give it to her when we finished. She told me to be at her dorm room at 8pm.
I arrived and there she was with her boyfriend. They had a bottle of win e open and offered me a glass. I said maybe later. She gave me the cash and told me to set up. I had some portable lights which I set up and got the camera ready.
She went to change and was wearing a sexy see-through babydoll and the smallest thong I ever seen. She goes over to her boyfriend and I start filming. I can see he's hard as a rock already so she unzips his jeans and eases out his cock. His cock has got to be at least 9 inches long. I never seen anything like it. She helps him out of his clothes and he's standing there with his rod in his hand as she goes down on him and is giving him head. I am trying to concentrate on the filming but I can feel my cock getting bigger by the second. He is feeling her tits and then they get on the bed and she puts her leg up. He slides her thong to one side and enters her from the side giving me a great shot for their movie. He's is pounding the shit outta her. They change positions a few times and he takes off her thong and babydoll. Then they go of the big finish and she gets on top and rides him like a pro. He tells her he's about to blow his load so she gets off and he comes all over her face and tits. I got the action perfectly.
As tehy collapse on the bed I realize that I came in my pants and had this big wet patch on me. They both looked over and started laughing. I was so fucking embarrassed I gave them the SD card and left carrying my camera bag in front of me to hide the wet patch.
Next day she finds me and says thanks and that her best friend wants me to film her too. Looks like I have a promising career in movie making