Sister gave me handjobs

When I was 15 my older sister caught me jacking off. I thought I was home alone and was sprawled out on the couch with my pants to my knees. My sister was 18 and fairly strait laced. She never cussed and I would have not thought of her as promiscuous. She did have a hot body and she did like to wear cloths that showed it off. She was who I was thinking of when she caught me. I don’t know how long she had been watching me before she cleared her throat. When I heard the noise I thought it was mom or dad. I jumped up and tried to pull my pants up. Then I realized it was her and I froze. And there I stood with my jeans around my ankles and my rock hard cock sticking out between the tails of my shirt. I turned beat red but she said in a soft voice”can I watch you finish?” I shook my head no and she said “ oh please show me how to do it. “ She gently pushed me back down on the couch. Then she shyly wrapped her hand around my wilting cock. At the touch of her hand it began to grow again. She asked if she were holding it right. I nodded wordlessly. She started stroking it and I sat up on my elbows and watched her. I knew I was getting close but I was too shy to say anything. I suddenly exploded. My sister jumped a little bit and a rope of come landed on her arm. When it was over she told me to not jack off again by myself. She said to always get her because she liked doing it. The next time she did it was the next day. I was in the barn moving hay bales around and she came up to the loft and watched for a while and then she said let’s do it. I knew what she meant and this time was eager. She unzipped my jeans and pulled my cock out and jacked me off. From then on it was a constant thing in my life. Whenever we were alone she gave me a hand job. Sometimes it was slow and sexy and other times she jerked on my cock so hard I thought she was gonna rip it off. This went on for several years until she met the man she eventually married. Then it stopped abruptly.