I would never be able to forget you.
An emotional goodbye letter is written by a heartbroken girl to her boyfriend after a very emotional breakup.
Mention that the moments he said he loved you for the first time is still fresh and that you will cherish the two years of togetherness.
Going by the logic, it can be said that no break-up letter can keep the reader away from grief or pain.
Now I would like to leave you to a life of your own, and I will lead my life the way I want to.
But now, you have left me alone, my life incomplete and heartbroken.