If I recall correctly I actually posted to your former H back when you both were posting. I had just come on here and felt things were not going the way they should for the two of you.
If you write this letter, you are doing it for you. He may not want to hear it because chances are he can't trust what you say to be true. I know that is what I would think if something similiar came from my ex.
That being said, I do know there are things I wanted to hear from him. Not a script in anyway, but I so wanted to know that our marriage meant something to him. I know what it meant for me and I honored it but he obviously had different feelings about it. To this day he can't say anything in regards to it. I have put thoughts of getting an answer to rest. I probably will never know.
If your ex has a burning sort of question like that I would address it but otherwise, write the letter for yourself and keep it.
Not trying to sound harsh, I just don't think it does the LBS any good.
kat
Me-53(and learning!) S24, S21, D18, D17 Just keep swimming, Just keep swimming. Dory