What she does should no longer affect your mood and attitude and clearly it still does. Just stop. Picture the STOP sign in your head if you have to, but stop.
Life is full of endings. Living is about new beginnings. It's in your control, you just need to realize it and live it.
Life's too short, man. Don't miss the good stuff.
Everybody hurts. It's part of life. Don't miss the good stuff.