Have you ever heard the phrase 'Don't judge a book by its cover'?
It's such a nice little phrase that people need to think about more.
Many people judge someone without getting to fully know them. Do you not know how it makes that person feel? I guess you don't.
Well, it makes them feel awful. Having someone talk bad about them behind their back isn't exactly a nice feeling.
You should get to know the person before you start talking nonsense. As a matter of fact, don't talk nonsense for that matter. You should never talk bad about someone even if you dislike them.
How would you feel if someone went behind your back and started talking bad about you? Not good, right?
Save yourself that bad feeling.
Never judge a book by its cover.