Didn't start until I had full intercourse , used to ejaculate every night in my sleep from about 12. Change sheets the next day , sucked , but there you go. First woman I made love to , didnt cum for more than 3 hours , she didn't object , still have ridiculous staying power.
My wife's friend's husband still claims he has never spanked the monkey. He was a virgin when he met his future wife and has only been with her, so who knows. I would die if I couldn't clean my pipes almost daily.