text: getting engaged. how long dya reckon you should be together beforehand, and can you be too young? i'm 20, but i've been with my fiance 4 years. we've been engaged for 2 years. even i think thats quite young, but i wouldn't have it any other way! there is no time length the two of you need to be together before getting married.  if you feel like this is the one and you want to get married, get married.  though you might want to wait till you pull together a little cash to get a house/car/ect to get your life as man and wife started out right.