@The Pentacle Queen,
Ignorance is better than holding Grudges.
In-other-words, if someone lets you down to the extent that it hurts/bothers you, instead of holding a Grudge, ignore them for ever.
There is nothing more bothering to another person than being ignored as if they do not exist. It eats at them, for doing what they did but for you, it sets you free to forget what occurred and move on.
No room for negativity in any of our lives.