Dear [Name],
I am sorry, [Name], but it isn't working out between us, is it?
I think neither of us is to blame.
We have just drifted apart. I think we have had no choice.
I guess some relationships are not meant to be.
I hope you find your soulmate. And soon.
Because you have always admired honesty in others, I want you to know that [Name] and I have grown closer together over the years.
Don't get me wrong. I did not see him or anyone else during the time that you and I were together.
I think [Name] and I are falling in love with each other. We haven't told each other as much but my intuition tells me this is true and I am not fooling myself.
Please don't think that I am already on the rebound. That's not what it is. You've known [Name] as long as I have.
Please don't hold any grudges. I certainly won't.
I will always respect and admire you. I hope the feeling is mutual.
It may sound like a cliché but I do want us to be at least friends.
Take care.
Best wishes.
[Your signature]