Fun related fact, Facebook has an account for you even if you don't have a Facebook account, and your Facebook account has all sorts of information like relationships and employment status.

This is because all of your friends have Facebook accounts, and all of them give the platform access to their contacts, so Facebook knows that you're "John Smith," "John work," "John tech support," "John coworker," etc. They also know your email, thanks to your HR lady storing that alongside your phone number