At what point are you truly an adult? Am I a twenty year old girl, or twenty year old woman? I'm out of my teens, I've done the whole puberty thing, legally I'm an adult....but is it fair to say I genuinely am an adult? I have an apartment, but I'm not paying for it on my own. I've been in a good relationship for over a year and a half. I don't know. It's all weird.