When people are rude to you, they reveal who THEY are not who you are. Don't take it personally.
Only a true friend will tell you to your face, what others are saying behind your back.
Never say mean words out of anger. Your anger will pass, but your words can scar people for life. Use kind words or be silent.
Sometimes you just have to do be done, not mad, not upset. Just done.
It's sad how people you were once so close with, can become just another stranger you don't know.