Whenever. I was always a very shy, unconfident kid and was never good with girls. That changed this last year and I lost my virginity a some months into turning 17, now at 18 I do pretty well with girls though I'm by no means a player yet, still have a lot to work on in the confidence and game department. I'm pretty decent looking though now, and have a great body so that helps a lot. I think there is a critical period where you do need to have sex or risk never having it and becoming a forever alone basement-dwelling 30 year old, but don't have it be the biggest thing on your mind. When I lost it I wasn't even looking to lose it, I was just on a night out and it happened.