Dear Rose Tyler:
I know you will never see these letters, as fate has decided to separate us permanently. But hope is what keeps us going right? I figured writing these would help keep me close to you, so I'll never forget all the memories we made together. And I've decided to use real paper, somehow it just seems more tangible.
I'll start out by saying how much this separation has hurt me. Rose, you were so special, you are so special to me, words cannot even say how special you are to me. You were there Rose, you changed me from the bitter man I was before I met you, back before I regenerated. Even after that, you stuck with me. I wish I had done the same. I'm sorry, I'm so sorry. If I could go back, I would. I would give another regeneration again, just to be with you.
We had some fun times didn't we? I hope you're not too sad, I couldn't bear the thought of you not having a fantastic life.
It seems writing this was not such a good idea, look, my eyes are watering again. I hope this tear drop dries off the paper.
Anyways, after I was pulled away from you, it wasn't long before I was called on to save the world again. This woman named Donna was pulled into the TARDIS. She was really angry at the time but she got over it and we got on well after that. You would have liked her. Oh, and guess what? The Santa robots were back, just like last Christmas, remember, the Pilot Fish? That was my first memory created with you in this form, those first few days.
I'm off track again, let's see, it seems the queen of this ancient race called the Racnoss was slowly poisoning Donna with Huon particles, which were responsible for pulling her into the TARDIS, but I'll skip the technical stuff. It all was to revive her Racnoss family waiting at the center of the earth. Of course I was able to stop her from conquering the world.
But at that moment, when the queen and her children were drowning, I couldn't move. All I could think of was wanting to wipe out all evil in the world, no matter who paid. I thought, if only I had acted sooner, if only I had fully wiped out the Daleks back before the worst day of my life, the day you nearly fell into the void.
I also thought that maybe, if I destroy enough evil in the universe, just maybe, I could have you back again. But I can't, and all I wanted to do at that moment was to die along with the Racnoss.
Thankfully, Donna was there to remind me of who I am, and who you helped me become. Oh, she was brilliant! Turned down my offer to travel in time and space though. Good thing, because I don't think I could handle having another companion, so soon after losing you. I think of you all the time Rose, I hope you are thinking of me too.
-Always-
Your Doctor
P.S. You left your jacket here in the TARDIS. I put it in the closet for you.