If your relationship were in the crapper, why would you want the world to know? Allow us to tell you. It’s because people who make the change to “it’s complicated” actually want their relationship to end. In many cases, they’re chomping at the bit, so much so that they want every single one of their Facebook friends to know. They use it as a bat signal of sorts, a sign to alert any potential suitors that some fresh meat is about to come their way.
“It’s complicated” is actually Facebook talk for, “Unless something changes, I can probably bone you sometime in the near future. Private message me and start laying the groundwork!”
If your girlfriend recently made this change, expect your relationship to get uncomplicated very quickly. As in you won't be in one much longer.