How do you know the difference between a real friend and a fake friend?
A real friend. One that is always there to listen when you need it. One that isn't afraid to give you honest advice. One that will make you laugh when you are sad or help when you are sick.
A fake friend. Someone who talks behind your back but is only nice to your face. Someone who doesn't listen when you speak but might offer you advice anyway.
I'll once again reinforce the fact that you need to keep those who matter to you close to your heart and those who you don't trust or are only there when it's convenient for you, keep a bit of a distance.
It'll be beneficial to your own happiness. I promise.