Yep. 15-16 is the norm. If you make it past 18 and are still a virgin, you really get looked down on and it's much harder to ascend because you missed out on the social skill development that comes with teenage love. Once of my guy friends was bragging to me about how good his wife is (suifuel) and he asked me if I have a good relationship too. I just said "not at the moment" to not give away the fact I'm an adult virgin. He just accepted that and figured I've had relationships in the past and am just single right now. He never asked me about it again in around 9 months since. Keep in mind I'm not an ugly goblin that is obviously a truecel just from looking at him. I'm around 4.5/10 but have Asperger's, so it's not obvious to people that I'd be a 19 year old virgin. I know my friend would view me differently if he knew I had no experience. I just try to steer conversations away from romantic stuff.