I can trace back my desires to when I was 13. At that time I was a student in an all girls Catholic school. We were kept pretty dumb about sex. My uncle was a doctor and he went to our school and told the headmistress that it was wrong not go give us sex education. My cousin was also in the same school in my grade. Anyway, he prevailed and the school gave him permission to show us a movie. A nurse from his office came and after the movie was set up she sat there with us while we got our first introduction to sex.
The movie had some drawings of penises and vaginas and an animation of penetration. It had an animation about how to put on a condom, and one about how to use a female condom. The movie also had a sequence on pregnancy and birth.
When I got home I was curious and took a mirror to see myself. I told my cousin and the next afternoon she came over and she brought a book from her father's library and we looked at the pictures of penises and erections and also took the mirror to look at our vaginas. We kept his book at my house and hid it in the closet and we would use it to look at penises while we masturbated. The more we looked the more we wanted a penis.
When we were at our lake house we went and talked to the boy from next door. We asked him to show us his penis and we were prepared to show him our pussies, but he didn't ask. He could drive and we went with him to this secluded spot and he took out his penis and we played with it and it got hard and then harder. He asked us to suck him so we did. We offered to let him see our vaginas, so we took off our pants and let him finger us. Then we let him fuck us in turn while the other watched. He ended up coming inside her.
Now we had had some experience and this opened up a whole new world for us. We would regularly masturbate together in front of each other or even masturbate each other. We would lick and finger one another.
When we were sixteen I had a car and we went to the mall. At the mall we met these boys from a town about 25 miles away. They were older, college age, and they invited us to a party. The party was just us, and we both got fucked several times. We also gave blowjobs to all the boys. After that we were on a roll. We saw these boys a lot and partied with them all the way through high school. By the time we got to college and joined our sorority we were pretty knowledgeable.
One girl in our sorority was a total virgin, not even been kissed. One night we let her stay in our room and watch us finger each other. She rally wanted to be part of it so we included her and took turns to finger and lick her. Then one day we took her with us to one of our parties and we had several boys fuck her on the floor one after the other. By the time we got her back to the sorority house there wasn't anything virgin left in her. She liked to fuck and she became our partner and went to parties with us.