Learning from my Cousin

My cousin, who is about 5 months older than me, have been close our entire lives.  His mom and dad both worked, while my mom didn't work, so he spent a lot of time at my house in the summers.  He often would sleep over and we would just sleep in my bed, that was a futon, that we would put down into a bed for the night.  Everything was pretty uneventful until the one day in the summer before we entered middle/secondary school. That morning we were both side by side each other on my futon, and he asked me if I ever played with myself.  I said I always had my hands down my pants touching myself with a confused look.  He explained that guys can get their dicks hard and make it feel really good after a while.  I really had no idea what he was talking about so he told me to make a fist around my penis and go up and down on it.  He was next to me doing it too, but we were covered up with blankets so nothing was visible.  My penis obviously became instantly erect and I just did what he told me to do.  We were both going at it for probably five minutes, still under the blanket, and I didn’t feel this great feeling he was talking about.  I kept wondering how will I know when this feeling hits.  He assured me I would know.  A couple minutes later I told him I had to pee and that I would be back.  He told me don’t go to bathroom, just continue to go up and down on my penis.  I told him I would end up peeing the bed, but he said to trust him that it would be fine.  It was maybe 30 secs later and I felt the best feeling in the world.  It felt like my whole body was numb, besides my penis which felt like it was huge and pulsating.  I remember I stopped touching my penis and my boxers feel onto it as I was climaxing.  It took 15 secs or so to realize what happened and I just looked at him and he smiled.  I looked in my underwear under the blanket to make sure I didn’t pee myself, and there was just a little wet spot in there (maybe the size of a dime).  I told him that was awesome and how did he learn to do that.  He told me he learned from kids talking on the bus.  I asked him if he felt that feeling, and he told me that he orgasmed when I did (that was also a new word for me).  I asked him if he had that spot in his underwear and he told me he also did.  We both ended up needing to pee so we got out of bed and went to eat breakfast. Everything immediately changed from that morning.  I was hooked and wanted to have that feeling over and over again.  Immediately after breakfast we went back to my room and we did it again under the blankets, this time me knowing the ultimate end goal. Our days and nights together definitely got more fun, which I will go into more detail when I have a chance.