I'm 37 and female.
First sexual encounter: 14. It was not wanted, not consensual, and not pleasant.
First crush: 15. On my 9th grade English teacher. It was purely intellectual. I wasn't fantasizing about kisses, or marriage, or anything like that. I was fantasizing about talking about books and writing, or about having him for a teacher again because my 10th grade English teacher sucked. I'm not sure that counts.
First consensual kiss: 19. He got brutally dumped by my cousin. He was desperate.
First sex: See "First consensual kiss," six months later. He was really, really desperate. He had Issues, and she destroyed his self-esteem, and I was sympathetic (and there).
First relationship: 20. Mr. Kiss N Sex handed me off to a more desperate friend with even more shredded self-esteem. It lasted about a year, including 8 months strictly by phone. It was bad.
First marriage: In actual fact, I got married at 21. To the next guy I had a relationship with. I was 23 when we sent cards to invite the relatives to watch us exchange vows and sign the paperwork. He was also desperate (18, far from home and flunking out of his freshman year at college, verbally abusive parents, ADHD), and I was also desperate (21, Aspie, you know the story). It has not always been pretty. It has gotten pretty f****d up at times. But 17 years later we're still married, and it has been mostly good on average by and large.
I would recommend moving slower than I did.
Society says there is something inherently wrong with being a 30-year-old virgin (or never having been in a serious relationship, or unmarried, or childless for that matter). I bluntly do not agree.
Society says intimate romantic relationships leading to marriage are The Best Road For Everyone. I vehemently do not agree.
I'm told that men's sexual needs aren't like women's sexual needs. Women's sexual "needs" are more wants, men's really are needs. I think prostitution should be legal. Prostitutes should have a union, and safety inspectors, and people who make sure they're disease-free and safe. Guess that means they'd have to pay taxes, too.
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"Alas, our dried voices when we whisper together are quiet and meaningless, as wind in dry grass, or rats' feet over broken glass in our dry cellar." --TS Eliot, "The Hollow Men"