it depends, i think at 19 its hard to say you are ready to give up any other girl for "THE ONE". Most 19 year olds can barely take care of themselves what makes you think you know you have found the girl you are really into.

Alot of YOUNGER guys get that STEADY PUSSY, and fall in love. They are like OMG I CANNOT LIVE WITHOUT SEX AGAIN, I LOVE THIS GIRL. Sure she is pretty, shes funny, you like her alot, but sex makes you crazy lol.

As far as a timeline, there shouldnt be one, its when you feel the time is right. you cant say 6 months, 1 year, like its a deadline you have to meet. I agree a prudent amount of time is necessary, but i think if you find THE ONE then you know it, and there is no reason to set a time limit on it IMO, but again you have to be SURE and know its for the right reasons.

Ive only been dating someone for 3 weeks and this is the best i have felt in any "relationship" ive ever had. I really feel like we have been dating 3 years. We just have that connection and its working great. But we are also moving semi slow , dont want to rush into anything an screw this up.

Good luck if you do decide to marry her, if shes the one, youll know it