I'm sorry that I'm just now answering this. I would like to have answered it back in August, but I've been very busy. 

Personally, I think you're being too sensitive. How well do you know the other person? Why assume that he or she is a liar? You're illustrating faulty thinking in your reaction to this person. Specifically, the fault that you are of central importance in how someone else behaves. 

I think you take this social network very seriously. I'm not want to be rude but I  think you should enjoy more those great experiences that this site brings you and forget or avoid those things that make you to be in a bad mood. I mean, this web is as if you throw a empty bottle with a note into the sea, and someone (or maybe no one), find it.