Men trouble

I'm 21yrs old, and I've never been in an actual relationship or had a one night stand. I'm pretty put off with boys in my age group cause most of them just want one night stands,party ,drink or smoke .I just realised that since from the age of 15 only guys 9yrs and above older than me that ask me out. I don't have a problem with an 11yrs age difference.But they either have girlfriend's, married or divorced with children. I really don't know what's wrong with me. my friends tell me it is because I act more mature than people my age and I hang out with girls 3-10yrs older than I am. I would really love some advice please

Lovely, it's not that you act mature, it's rather, you ARE mature. There is nothing wrong with you. You're just blessed with insight beyond your years. Your maturity (aura) attracts those who appreciate your strengths whether they're the same as you or not. Your post tells us your values and standards. You'll eventually find a guy who is unattached and who will share your maturity and opinions regardless of his age.