I hope this letter finds you well.
I know you are at war and fighting for our country but you need to know that I've met someone else. I wanted to be faithful to you like I promised but you have been gone for so very long and none of us know what the future holds.
He takes me to the cinema every Friday. He is a doctor and he also has a flying license, imagine that!
I'm returning the locket and photograph that you kindly send to me, it seems like the right thing to do. Maybe you could send them to the next girl you meet. You are a lovely man, Herbert, and I'm sure you'll find a nice steady girl who wants the same things you do just as soon as this horrible war is over.
I hope you don't hate me.
Take care of yourself,