Is it normal if i don't like putting my relationship out in the open?

Privacy is the best policy for a relationship to be healthy and successful in my opinion. I have this thing where I like keeping things on the down low cause once its out there, people are in your business and you don't have that freedom without people judging you. It's not like it's "hiding" things from people, it's just more of keeping things safe and protected. So when it comes to my relationships, I don't necessarily like to put it on facebook, instagram, twitter or anywhere in the internet. As much as I would like to "show off" how much I am in love with my bf and how happy I am, I get scared that once it's posted it's "official" and people are watching my every move to cause some sort of drama. It might be all in my head but just for my own peace of mind and for the sake of my relationship, I don't like putting it all out there. Also, what if something does go wrong? Then I have to take it down and it's like putting your life out there for everyone to see and analyze what happened. If I wanted people to follow my life, then I would do some sort of reality show and completely put it out there. It's either black or white for me. In this case, I don't like putting it out there at all. For ex, once I put a pic of my bf and I, if I put up something not so relationship like, people will judge right off the bat like stfu. At the same time, I don't care what people think yet I don't like dealing with people thinking they know my life. I freaken hate it. I have a short-temper and like to explain things from my point of view until the other party understands me 100%. So yeah it could get ugly when I start arguing or when I'm frustrated. Sooo that is why I rather save the trouble and not put anything on my social media or in person unless someone asks if I am in a relationship then of course I'll say yes. I am a private person so its funny when people think they know what's going on when they have no evidence to back it up cause I never provided it.