I think that is actually something that needs to be discussed with the person. I "dated" my b/f for 2 months(Pretty close to going out atleast 3 times a week) before I even called him anything but a friend.
What do you think is the most important qualities in a SO?
My fav neihbours are Sean and Helen adntheir 3 young children Amanda, Jessica and Sean jr. On the other side are Luigi, Mirella and their daughter Ariana (and Boomer the dog).