This is super hard to learn for anyone that has been through a narcissistic relationship... they make you believe they "really" need "you" and yet are just expert sociopaths and manipulative liars with the most charming personalities.
Don't let anyone ever break your soul. You have to stand on your own two feet and stand up for yourself. The are those that would give anything to see you fail, but never give them the satisfaction. Hold your head up high,smile and stand your own ground.