My father taught me to be nice first because you can always be mean later. But once you've been mean to someone, they won't believe the nice anymore. So, be nice; be nice until it's time to stop being nice, then destroy them.
The most painful goodbyes are the ones never explained. I never got an explanation or any closure with her just walked away without a saying a word and act as if i never existed in her life. Heartbreak beyond belief.