At the time of this story Karen was my best friend's girl. However he was cheating on her and she became aware of it. Being my best friend's girl, she was very close to me.
She came to my house around 7:00 pm one night and we started to chat mostly of her situation with my cheating best friend. Around midnight, she realised it was too late to get back home as the last bus had gone so my mother made arrangements with her parents and she stayed at my house.
Around 1:30am I heard someone knocking at my room's door. It was Karen who told me she didn't want to sleep alone. I let her in and she laid beside me. She fell asleep inmediately but my little head did not allow me to sleep anymore.
I started to try to peek under her shirt to see her 34 C breasts. I also started to touch her butt under the sheet. I became braver and got rid of my pants and started to stroke my cock while touching her butt and tits.
Suddenly she turned toward me and said: 'you are a really horny little perv. Why don't you ask me to remove my clothes'. While talking she started to remove her shirt and shorts and laid totally naked beside me.
She then said, go ahead, jack off, I want to feel your hot cum over me'. At that time I was harder than ever in my life. I started to slowly jerk off my six inches boner. Karen started to touch her perfectly shaved pussy and let me touch it too and I lubed my cock with her juices.
In about two minutes I felt the orgasm building up and announced that I would come. Karen ask me to cum over her beautiful tits. After that I came all over her tits and her tummy. It was the most intense orgasm I had already. I shot about eight ropes of thick cum all over her.
Karen spread the cum over her tits and licked some of it from her fingers. She told me I tasted really good. After that, she started to masturbate while I watched her fingers going in and out of her meaty pussy. In about five minutes she came strongly and loud. We then cuddled in bed and got asleep.
That was the start of a really interesting masturbatory relationship between us. My friend never knew about it until he married another woman and I got the balls to confess my experiences with his ex-girlfriend.