When love fails and an important relationship ends then this sentiment may reflect how you feel. Love is a bittersweet thing, it is full of joy in the beginning but when it ends there is usually some bitterness and resentment. This can cause you to turn away from romantic relationships though, and you could miss out on all of the joy and passion that life can bring.
When a toxic person can no longer control you, they will try to control how others see you. The misinformation will feel unfair, but stay above it, trusting that other people will eventually see the truth just like you did.