____________ (mention name of your girlfriend),
Dear _____ (Name),
Through this letter, I would like to present my heartfelt apologies in front of you, to state that I have cheated you_______ (reason for cheating). I have being lying to you and feel guilty.
You have always been the perfect partner for me. You have always supported me throughout my tough times and it has always been amazing to be with you. I will always remember the good times that we have spent together. We have been on trips, to the picnics, to the movies that we went to ____________ (mention your memories).
I remember how we met for the first time and our bond turned into something very special, but I couldn’t do justice to our relationship. I admit that you don’t deserve this, it didn’t happen the way we always dreamt. In this regard, I am sorry for cheating you, please forgive me.
_____________ (mention your name)