Even though he had a very big cock, I learned how to suppress my gag reflex and take it all the way into my throat until his balls were resting on my chin. The first time that it happened, he was fucking my mouth and pressing the head of his cock against the constriction at the back of my mouth leading into my throat .He still had about three inches of his cock still outside my mouth and as I became more comfortable with the feeling he started to push even harder. Each time, he was able to go in a little further than before. I felt the entrance to my throat gradually being stretched open in order to accommodate him and to allow the passage of the massive head of his cock. He continued pushing, forcing it deeper and deeper until all at once, I felt something in my throat suddenly give way as the head of his cock popped past the constriction and continued sliding easily all the way into my throat until my nose was buried in his pubic hairs!! We were both amazed at what had just happened!! I was delighted with the way that it felt with his cock buried deep in my throat. After a few moments, he withdrew his cock until just the head remained in my mouth only to roughly force it back down into my throat. The more he did it, the more saliva I produced, lubricating my throat and making it easier for him until finally, he was able to slide his cock from just inside my mouth to all the way down into my throat in one smooth and continuous stroke. From that day on, it became our favorite technique. I loved the sensation of his thick cock expanding and filling my throat and I wanted to keep it there for as long as I could. Although I was unable to breathe with his cock all the way down, I would learn to use my throat muscles to massage his cock until he came.
Over time we developed a routine. Each day we would meet at his house or mine, usually his where. I would get down on my knees with him standing in front of me and I would suck on his cock as he held my head and fucked my mouth. Sometimes he would cum with his cock on my tongue so I could taste it before I swallowed it but usually, after vigorously fucking my throat with his cock, he would cum with his cock buried deep in my throat. I couldn't taste it but I could feel his cock pulsating in my throat as he ejaculated directly into my esophagus.
Once, we were almost caught by his older sister when she came home unexpectedly just as he was cumming in my mouth. He was able to quickly put away his cock and zip his pants just as she walked into the living room where I had been blowing him, but I was still on my knees trying to swallow his cum. He made up a lame excuse about me looking for something that I had dropped on the carpet but since my face was very red and we both must have looked guilty, I'm sure that she knew what we had been doing. After that day, she always gave me a little knowing smile whenever she looked at me. Since she was also my sisters best friend, I always wondered if she ever told my sister about her suspicions..
Often, after dinner, we would go up to the roof of the apartment house where he lived and I would give him another blowjob on the roof behind the stairwell enclosure. The parapet came up to his waist so although he could be seen from the street or the adjoining buildings, I couldn't be seen down on my knees sucking on his cock. I kept a board there to protect my knees from the roof gravel. If the weather was bad, I would blow him just inside the door of the roof landing. We continued with our daily ritual for over two years until he moved away. I still love giving blowjobs, but I loved sucking my best friend's big cock the most of all. I recently confessed to my wife about having sucked my friends cock and about how much I loved doing it. I didn't tell her that I'm still a cocksucker.