>>81705626 (OP)Ha, that used to be me. Girls in their teens were flirting with me up until I was in my forties. When my youngest daughter was 19 a woman she worked with said to her "That's your Dad? I thought he was your older brother!" (I was 37 when my youngest daughter was born.) I laughed it off and said "That poor woman should get her eyes checked!" but of course I was flattered. And before anyone says my daughter must look old for her age, she also gets mistaken for being younger than she is.
I suppose most of looking young probably just comes down to staying slim, and if you're lucky enough to not start balding. Nowadays so many people become monstrously obese by the time they're thirty.
Sadly all good things come to an end. A couple of years ago my eyesight got really bad and I couldn't even wear contact lenses anymore and had to start wearing thick glasses. I instantly became invisible to women. C'est la vie.