Hi, I Have Been In A What Is Basiscally Long

Hi,

I have been in a what is basiscally long distance relationship for over a year now. But I struggle to admit or call her my girlfriend despite how close we are and such. I also am too scared to tell anyone or my family. I worry and only use a secure messaging app to contact her and I've only told two friends about her existence because I know they won't tell anyone.

Does my behaviour appear abnormal or outline any underlying issue?

Any advice on the topic would be greatly appreciated.