Godly sorrow is different from the mouth saying “I’m sorry;” it’s from the heart. How can we tell which is which? We can’t tell by words alone. Only actions express sincere contrition.
II Corinthians 7:10
Godly sorrow brings repentance that leads to salvation and leaves no regret, but worldly sorrow brings death.
I remember a friend of mine who had been devastated by her husband’s infidelity. He had expressed sorrow for his poor judgment and betrayal. She never believed him. He asked for total forgiveness. She could not give it. She confessed to me that she wanted him to suffer (as she had suffered). But what was she really saying? I believe she never saw “Godly sorrow.”
But I wonder, would she have recognized Godly sorrow in his behavior? If actions are the reflection of authentic regret, it’s important to know which actions would speak that truth. What does repentance look like after someone has hurt you?
Meditations from Zion 
“I remember a friend of mine who had been devastated by her husband’s infidelity.” I can completely relate to that from my own experience.
Very nice.