_________ (mention recipient’s details)
Date: __/__/_____ (date)
Dear _________ (Name),
With due respect, I write this letter to apologize for the poor behavior I have shown on __/__/____ (date). I apologize as I was drunk and was out of my senses.
I know that this did hurt you a lot and to a great extent. All this happened because of the liquor I consumed. I am sorry, please forgive me for the same. I assure you that you will not have to face such intolerable behavior again.