First Encounter

When I was 10 me and a friend would get undressed, climb into bed, rub our little hard cocks together and kiss.
On one occasion his 6 year old brother joined us and I couldn't take my eyes off his tiny little stiffy. After a while I took him in my mouth. He seemed to like it but for me it was an amazing experience.
This all stopped after a month or two and his brother never joined in again.
I still fantasise about this and now I read the stories on here and masturbate.