Strange, not sure i have ever thought of it that way, which may be sorta odd? Growing up, i always had crushes on other guys, but religious and other cultural conditioning had me fighting the fact i'm gay for a long time. Also have always been a lot more anally oriented that oral. i started associating receiving another Guy into me using my rectum from age 7 and all my masturbation fantasies were anal, not oral.
i did not (finally) have my first sex with a Man till i was 26 years old. Ironically, religion had me repressed and suppressed, but my first experience was in a religious setting.
i was living in Southern California and drove into San Pedro for the weekend to work on a missionary/hospital ship that was in port for refurbishment. i got there on a Saturday morning and was going to work that day, spend the night then leave Sunday. They put me up in a berth with "Skip." He was about my age, and gave me a tour of the ship before heading off to his own job as a crew member, so i didn't see Him all day after the tour. At the end of the day, i returned to the small berth i shared with Him. It had a bunk and then a single bed perpendicular with a small porthole over it. i showered and turned in early, about 9 and lay on my bunk in the dark. The berth was almost pitch dark, with only very dim light coming from the small port hole from the harbor.
Skip came in later and i pretended to be asleep as He quietly went to His bed. In the dark, all we could see were shadows, but i strained to watch Him in the dark. After lying on His bed, He removed His clothes. His bed was only about 4 or 5 feet away, but it was so dark, neither of us could really see anything, but we could hear each others breathing. We began this wordless cat and mouse game where just from breath and mouth sounds we both were aware the other was awake. It also sounded like He was quietly masturbating, and i got very turned on.
This went on for what seemed like hours, the sexual tension was thick. i finally could not stand it any longer, and a lifetime of need/want moved me from my bunk to His. i could still barely see anything, but realized He was naked on top of His bed as He turned toward me kneeling by His bed and silently offered me His Cock. i took His Cock into my mouth and He got all my pent up desire for a Man and it didn't take long before His Cock swelled and exploded in my mouth with several spasms of semen. i tasted and swallowed in both bliss and wonder and continued sucking until He went flaccid, pulled out of my mouth and without a word turned away and went to sleep.
i crawled back into my bunk and was in love lol, finally drifted off to sleep. When i woke the next morning, He was gone and i think He avoided me on purpose, i didn't see Him before having to leave. i came back the next weekend to work again, but was roomed with a different guy. i saw Skip with a group of others. He said "Hi," but essentially pretended like nothing had ever happened.
That night, when my new room mate came into a similarly dark berth and got on the bunk over mine, my prior weeks experience was all i could think about. i was lying on top of my bunk with a very tight pair of nylon briefs when He came in, again pretending to be asleep. When He got on the upper bunk, i made some sucking mouth sounds and heard as He put His head over the side of the upper bunk and was looking down at me in the dark. i got afraid at that point and didn't go any further, just pretended to be asleep, and after a few minutes, He lay back down and went to sleep. Have always wondered if that was a missed opportunity.