It depends on the family.... tbh I'm not aloud to date for a while but some ppl start dating at 5th grade and some start when there 15 so it rlly depends plus it has to be the right person you cant just go out and pick the first person you see and say THATS gonna be my bf/gf. NO you have to form a relationship, become friends, then see if you guys would be good together, if it seems like you won't work romantically then you can always stay friends, and in that case you gain a friend :D