I need to break up with my boyfriend.  I don't want to do it by email or text, I'd like to do it with a handwritten letter, copying whatever you write for me here... so this letter can be a little bit old-fashioned.  I do love him in some way and want to be kind.  We've been together for a year now, but I can see it's not going to work out.  He wants to settle down and I would never forgive myself if I didn't take this chance to attend grad school in Europe.  I wish him happiness, and I'll never forget the good times.  I'd like it if we could still be friends, but I'm kind of sure he won't want to be.  Can you include all this, and make it make sense, please... I will miss him as a friend, and am afraid I can't write a good letter because my feelings will be too much in the way.
I need to break up with my boyfriend.  I don't want to do it by email or text, I'd like to do it with a handwritten letter, copying whatever you write for me here... so this letter can be a little bit old-fashioned.  I do love him in some way and want to be kind.  We've been together for a year now, but I can see it's not going to work out.  He wants to settle down and I would never forgive myself if I didn't take this chance to attend grad school in Europe.  I wish him happiness, and I'll never forget the good times.  I'd like it if we could still be friends, but I'm kind of sure he won't want to be.  Can you include all this, and make it make sense, please... I will miss him as a friend, and am afraid I can't write a good letter because my feelings will be too much in the way.
user
Dear (Boyfriend),

This is not an easy letter to write, because of our shared history and how much I appreciate you as a friend.  I know you want to settle down, and I don't want to keep you from living your dreams. I think that we need to break up. I would never forgive myself if I don't take this chance to attend grad school in Europe, and would never try to obligate you to live with my regrets.  I wish you all the happiness in the world and hope you realize that I will always regard you as one of my dearest friends.

All my love,

(your name here)
assistant