Am I the only one ?!

Gi
I am 19 years old and my boyfriend and I have been together for about a year and a half. We have an amazing relationship and I stay with him most of the time. We are on our way to being pretty financially secure. 
I am in college and we have been talking about getting a place together. Are we too young? If there are any of you out there that have been in this position, how did you tell your parents/ convince them this would be okay for you? Thank you guys!!!