Exploring Boundaries in High School Friendship

How I became a cocksucker.
When I was in high school a friend and I occasionally sat around and jacked off as young men will do. Once while jacking he asked if I wanted some help. I said sure and he reached over and started stroking me. After a bit he started sucking me and when I was close he said now it's my turn. Being all horned up I started sucking my first cock. When he got close he told me to stop and we both went back to stroking till we came. This continued for a few months even occasionally cumming in each other's mouths. Eventually we both got girlfriends and stopped.

Fast forward many years and another friend and I was sitting around watching porn. All of a sudden he pulled his cock out. He is about 8 inches long and thick. I couldn't take my eyes off of it. He asked if I wanted to touch it. So I started stroking him. He said what he really needed was a blow job. I couldn't resist and started licking and sucking him. When I could tell he was close I started to pull back. He grabbed my head and pushed it back down till he exploded. Cum ran out of my mouth and even up my nose he came so hard and so much. He told me to lick it off his balls and I did. Seems like after that anytime we hung out I would blow him. In private he started calling me his personal cocksucker. Eventually he moved away but I constantly fantasize about being someone's personal cocksucker again. Hopefully soon.