The point in which something is cool/amazing enough for someone to put it on facebook.
This is not facebook worthy
when a sexual relationship between two people gets serious enough that it can be entered under a facebook relationship so that everyone in the world can see
boy 1: so you mean that you hu with that girl again, dude this is like the third time in the last week
boy 2: yeah, we are getting pretty serious, i think we are about to become facebook worthy