When I was 13, my cousin would spend the summers with us. Shelley, being from the city, always seemed older, although she was my age.
One night, we were watching "Roseanne"- the episode where she kissed Mariel Hemingway. I said, "gross!"
She asked if I ever thought about kissing another girl. I said no. I asked her the same, and she said yes, and had done it a couple of times.
I asked her what it felt like. She said, "like this", and she proceeded to kiss me.
I was hesitant, but she was so soft and gentle, we kissed for a couple of minutes.
We both kinda giggled, and finished watching tv.
That night, we snuggled in bed, but didn't do anything more than kiss.