The letter I sent was returned to me.
Who did you send the letter to?
I sent it to my ex-girlfriend's boyfriend simply because I was angry.
The letter may have been retuned because it was not addressed properly. Make sure next time the letter has all the information on it so it does not come back to you.
It doesn't matter to me. I'm mad that I had to address the letter to some other guy.
I am sorry that you are having trouble dealing with your feelings about your ex. However in the future if you do want to talk to her, you should be careful about providing the right address.