How to write an unsent letter to an ex

By the Murlune team · Updated October 30, 2026

Some breakups end mid-sentence. There is something you never got to say, or something you said that you can't take back, and the person who would understand it best is the one you can't talk to anymore.

An unsent letter gives that sentence somewhere to go without reopening the door. Here is what to write, some prompts for the feelings that tend to come up, and what to do with it afterwards.

Why not just send it?

Sometimes sending a message is right. But a message to an ex often asks for something: a reply, an apology, a second chance. A letter you don't send asks for nothing. You can write the angry part and the tender part on the same page, and nobody has to answer either.

If you still want to send something after writing, wait a few days and write that message separately.

What to write

You do not have to cover all of these. Pick the one that feels heaviest and start there:

What you miss, honestly, even the small things
What hurt, in plain words, without softening it for them
What you regret, if anything, including your own part
What you're grateful for, if there is anything
What you want for yourself now

Prompts by feeling

Start with whichever matches tonight:

Angry: “What I never got to say when it ended was…”
Sad: “I still catch myself…”
Guilty: “I’m sorry that I…”
Grateful: “Because of you, I learned…”
Confused: “I still don’t understand why…”
Ready: “Tonight I’m letting go of…”

What to leave out

You don't need to be fair, but try not to write to win. A letter that keeps arguing can keep you in the argument. If you notice you are building a case for why you were right, pause and write what you felt instead.

If the relationship was abusive or frightening, you owe them no kindness on the page. Write for your own clarity, and consider talking to someone you trust or a support service.

Afterwards

Read it once, slowly. Then decide: keep it somewhere private, tear it up, or let it burn. On Murlune you can burn it on screen, and it never leaves your device.

If you feel stuck in the same loop for weeks, talking to a friend or a counsellor may help more than another letter.