A boys education

Back in the 70s when I was II mom was dating a nice older man I'll call Jerry. He would take mo and me places and he would BUY me things. One month my mom had to leave the country for a while and I had to stay for school.
Jerry took me to his house and took me to school. The first week was normal, but come Saturday night he came to the room iwas staying in. I woke up when he sat on the bed.
Not knowing what he wanted I pretended I was still asleep. He put his hand on my groin area and rubbed it. When he felt my little dick react to it he slid his hand under the sheets.
He cupped my dick and needed it to life. He heard me breathing hard and asked if I was scared. I said yes, no one has touched me there before. He asked if I llay with it I said no mom says its wrong to do that.
He said it is for little k**s to do it, but I'm old enough to.
He pulled the sheets down and told me to take off my PJ bottoms. I did and he said I had a big dick for my age,and if he can show me how to play with it. I said ok. He took off his boxers and layed beside me. With one hand he squeezed my balls and the other hand he slid it up and down my dick. I was so scared but it felt good. He kept doing it till I thought I had to pee, he said it's OK just stay where I was and I'll see something I might like. All of a sudden my dick started to jump and buck in his hands, then white liquid started shooting out, it felt so good.
Sunday morning he told me not to get dressed, it's only us guys here and we have nothing to worry about, it felt weird being nude, especially in front of him, but he said not to worry.
We ate breakfast and lunch naked,it was great.
He took me home and told my mom I behaved myself and was welcome back any time.