What's the worst thing you've ever done?
Would you call that thing "sinful":
If was stealing a piece of candy?
If was getting drunk?
If was telling a lie?
If was betraying someone?
All sin is sin.
It's not all that everything is the same.
But, taken to it's full expression all sin develops or progresses into this condition known as death.
The wages of sin is death.
Jesus paid the price for sin to be eradicated/removed from our lives if we ask him and place our trust in Him.
Betrayal is a sin that can be both forgiven and made whole in a ne Way.
The first thing in order though is to activate the process of being made whole/healed and it is through "Forgiveness".
Loving Jesus, Loving people... Come as you are and you will be loved!