Mulan, thank you for posting this letter.
Inky, big hugs.
Keep in mind that he is under mind control and is also in great pain. It is no excuse for what he wrote, but it does help to explain why he wrote it. Hopefully someday he will realize how heartless his letter sounds. He really should have had someone read it over first; they might have talked him out of sending it.
I will always love you, though my love has changed.
He wrote this too. It may be some small consolation to you that I think this line is expressive of the love he really does feel, deep down. I think our families do love us, but their love is masked by great pain caused by the mind control of an organization that tells them they must shun they people they love. Think back to when you were JW and remember the people you loved that you had to shun because the WTBTS told you that you had to do so. Think about the pain it caused you.
I have seen a lot of posts about retaliation. I would seriously urge you not to do so. That would be a mistake. Giving into the pain that this letter has caused will only continue the cycle of hurt. This letter was unnecessary and needlessly painful but there is no need to respond in kind with anything you would later regret. Response from you would only give him justification for his original letter, unfortunately.
Again, I am truly sympathetic to your circumstances. It is a very difficult thing to have to experience, and made even more difficult when they act cruelly out of self-righteousness.
Tammy