Do You Believe?

Is there a person who cheater, who hurt you deeply?
He apologized for what he did, but you find it still can not ease the pain in your heart?
Do you find it is really very hard to believe him again?
Sometimes he tells you something, but you still cannot believe him, and just think he is lying again whether he is really lying of not.
What is your opinion on this condition?
Could you tell me about this?

I am in trouble about this, and I just want your opinions about this.
Thank you very much.