Caught by roommate and pulled through

As you probably know, I'm in Los Angeles at the moment and it's always pretty busy here. When I finally had some time to myself, I made myself comfortable in front of the TV. Since nothing good was on, I took off my clothes and looked forward to a nice orgasm. I started playing with my pussy and enjoyed the peace and quiet. Suddenly, however, our flatmate was standing in front of me - stark naked, with a hard-on. He had been watching me the whole time and became visibly horny. Now he had the idea that we could finish it together.