'I don't want FB to know my relationship status'

Is there any way I can change my Facebook status to show that I am not in a relationship with my girlfriend without her finding out? I can make it private, but she may notice it. I want to do this because I don't like the idea of telling the world about my personal life. I don't like sharing anything in public as this is very personal. My girlfriend won't like it if she notices that this is hidden, but she doesn't understand that I like keeping some things private. What do you suggest I do?
Deactivate your Facebook and other social media accounts, convince your girlfriend to unfriend you so you don't have to tell the world that the two of you are in a relationship, or email Mark Zuckerberg for a solution.

One of the things I want to try and do before I turn 30 is have at least 10 relationships. I believe this is good for me because life is short and I need to experience as much of it as possible. Is this a good idea? I'm worried I may not be able to settle down later.
Planning relationships and actually having them are two different things. My advice is to stop watching too many James Bond films and focus on the little things that make life worth living. If you happen to have a few relationships along the way, well and good. As for not being able to settle down at 30, that, again, is something you should worry about only when you actually turn 30 and look back at what you have spent the last decade doing. To try and plan aspects of our lives involving other people is foolish, because they have minds of their own too. Relationships happen when they do. You can't decide to have one every year, completely ignoring your own feelings and, more importantly, the feelings of other people who will play an active role in these relationships too.