It started when my sister and her friends used to come round a spend the day in our swimming pool. After everyone had left we would share a bath. At first we just played and touched each other but as she got older I couldn't help but run my fingers over her silky lips. It was not long before I persuaded her to lie down and let me stroke her with my cock. At first I just my head would slip in, but after I had spent a little while teasing and pushing she suddenly pushed hard into me and I was buried inside her.
We never looked back
