Indeed it is a right of passage to update that Facebook status.
The "single" on my Facebook status is old, dusty and rotting.
When two people are involved in the activity of dating, there is no level of commitment shared between the two individuals.
This is because, as mentioned earlier, dating is often done to see whether or not an individual would make a suitable partner.
Relationships are developed through constant communication and being with a particular individual.
If I ever try to change it, I think the whole system will break as the gears on my Facebook status are dry and rusty..a bat might fly out of there.
I talk to many friends who get hung up on "status" of a relationship. On one hand, if you're dating everything is great, the person is treating you right, why does it matter if you're labeled girlfriend-boyfriend?
"Dating exclusively" means you are not dating anyone else.
It's possible to "be boyfriend and girlfriend" without dating exclusively, but that's pretty rare.