This happened about three months ago.
I was alone in my dorm room feeling horny and missing my boyfriend who was at another college two hundred miles away. I decided to take some nude photos of myself and email them to him as a surprise. I was using the timer on my camera and had it set for 10 seconds and had taken about a dozen shots of various poses when my room mate (Lynn) walked into the room. She instantly figured out what I was doing when the camera auto flashed and I was laying naked on my bed. She giggled and said that I must be feeling a little 'frisky'. I explained to her what I was doing and why I was doing it. Lynn smiled and offered to take pictures of me instead of using the timer. I instantly agreed as I thought the pics would turn out better.
At first our 'photo session' seemed normal between us, as we often had seen each other nude. As time went on I began to realize that I wanted her to do more that just take pics of me. My pussy was feeling really wet and slightly swollen. As Lynn was taking a closeup of my pussy she noticed my wetness. She remarked that I should take care of myself or that she could help me out. Still fully clothed, she must of took my silence as a 'yes' for her to help me out as she began to gently rub my pussy. I was in heaven and began to moan, asking her for more pleasure as I spread my legs allowing her full access to me. She realized the pleasure that she was giving me and was focused on my pussy, especially my clit. She soon brought me to a shuddering orgasm and I laid there totally satisfied.
Lynn got up from my bed and walked over to my laptop to download the camera to it. She was acting as if nothing had happened between us. Finally, I asked about what had just taken place and she responded that she enjoyed jilling other girls off and that she would be glad to give another jilling anytime I wanted one.
Lynn and I had several more sessions together and I gave her the same pleasure that she gave me. The pictures were never emailed to my boyfriend.