This may sound stupid but it's true.
So how can I convince my elder sister (18 3/4) that I am right in this thing (me 16 just over). She thinks that Facebook is the most reliable source of relationship information. One day I told her(kinda accidentally) that I have a girlfriend and she went and checked it out on Facebook. Me and my girl hadn't marked in on Facebook so she said to me that I am not in a relationship cause Facebook says so. So I asked her if she actually trusted Facebook more than me. Well she said ''In these things I trust it more than you.''. I am not the most likely person to have a girlfriend so she obviously thought that I was lying. How can I convince her that Facebook isn't the most reliable source on the internet?