I asked my sister if I could take some poloroids of her to jerk off to. She agreed. Then she said she wanted a cock pic to finger herself to. After taking the pictures we were both so horny we started jerking off together. After a few weeks of doing that, we decided to pop each other's cherry. I was 15, and she was 13. After that, we fucked like a couple of bunnies. We're both in our fifties now with our own families, but when we get together, we still find time to fuck