It was towards the end of my sophomore year in college. Connie, who was also a sophomore, was a chemistry major. I was majoring in biology as well as chemistry, so we had occasionally shared classes throughout our first two years at school in addition to our fun times in bed. We had arranged a study session together for an upcoming chemistry exam that we both had, and Connie planned to meet in my room at 7:30. After about two hours of intense studying our attention started to focus on each other. My hands started to gravitate towards Connie's ass. I so loved playing with her butt. After some kissing and exploration between the two of us the clothes quickly came off. Connie's body was exquisite and glancing down towards her crotch I could see that she had just recently "groomed" her landing strip. Fingering her pussy, it was very clear that she was excited. Wasting no time, I went down between her legs and began teasing her with my tongue. Connie had my stiff member in her hands and was just going down on it when in walks Steve, my roommate.
Now I should explain that we each had bedrooms just off our common living space and we were playing in the common area on the couch and not in my room. Whenever I have entertained my lady visitors in the past we always played in my room and generally it was in the wee hours of the morning.
Steve was actually more embarrassed than either Connie or me. Blushing he tried to turn away, but his eyes continued to lock onto Connie's luscious body. Steve mentioned he needed to gather some study materials and would head down to the lounge area. Connie squeezed my hand, looked me in the eye and whispered, "he is cute." Then she nodded at me and had me ask him to join us. Now I had been involved in earlier threesomes in the past involving two females, including some with Connie, but never with two males and a female. The thought however turned me on. I got up apologized to Steve then informed him that both me and Connie would like him to join us. I assured him it was Connie's idea, but that I was fully supportive of it. Steve then sits next to Connie on the couch, she puts her arm around him, and they chat for a bit. He then gives her a kiss and excuses himself to take a quick shower to freshen up. Connie and I moved the scene to my bedroom. The rooms are very small, but I had a twin mattress I slept on and another twin mattress I stood on edge as a "sideboard" butted up to the wall. Whenever I was entertaining guests, I laid that mattress down next my bed creating a "king bed" that took up the entire bedroom.