This happened between my neighbor and I.
When my neighbor Matt was ten and I was fourteen, we would hang out a lot. He would come over and we would play video games together. One day I asked him if he had ever seen a picture of a naked girl. He said, 'No.' So I asked if he would like to. Of course he replied that he would. I went onto my computer and showed him some pictures on my favorite website at the time. Then he saw some other pictures of girls giving guys handjobs, and he asked what that was. I told him that it felt good when someone did that, even if it was yourself. He was intrigued, to say the least.
I asked him if he would like to try. It took some convincing but eventually he said he would. I got him to take his pants and underwear off, then I did the same. I had him sit down, and I proceeded to stroke his penis. We were both extremely hard. After a while of stroking he said he had to pee and wanted me to stop. I knew this was him about to cum, so I kept going. Soon he had his first orgasm.
He said that he really liked it, and would like to do it to me. So he wrapped his hand around my cock and did the same. We did each other twice more after that.
The next day he called me and wanted to come over. Of course I knew we wouldn't be playing many video games. But we still had a lot of fun.