Remus sighed softly and picked up his quill, knowing full well that he had to get the task done before his resolve wavered. As the sun began to set he flattened the parchment and began the worst letter he had ever had cause to write.
Dear Sirius,
Our days at Hogwarts are coming to an end and with them, the security that this old castle has provided us over the years. I think you know as well as I do, that things will change once we leave here.
You remember the day we met? You had a big scowl plastered on your face as you dragged your trunk onto the train and yet your eyes still shone with excitement. You pranked three students before we'd even made our way to a compartment.
I'll miss that you know, the pranks and the laughter.
I remember the day you discovered my secret, the way you gaped at me like a fish and backed away like a frightened deer. I was so disgusted in myself that day. Not even you, my best friend, wanted to be near an animal (monster) like me.
I never expected you to speak to me again, yet you did. I still saw the disgust in your eyes, but I learnt to pretend that it wasn't there. It went away though, after a while. I guess that's when your feelings started to change.
The first time you told me you loved me was in the middle of winter. I remember because you tucked my scarf more tightly around my neck before whispering the words in my ear. You didn't kiss me or even touch my hand, you just smiled and went back to the castle.
It didn't take me long to realise that I was in love with you too. I was halfway through a Potions essay, do you remember? I flung it to the floor and threw my arms around you, whispering the words just as softly as you had.
...Oh Sirius. We've shared so many memories, both good and bad. I will never forget them, no matter what happens next. I promise.
I have to stand for my dreams now, Sirius. I still have a little faith in myself, which has everything to do with you. Without your support I would probably be lying in the forest, half-dead. I don't want to say goodbye to you, Sirius. It's too final and to be honest, I don't think that I could live through it.
Instead of goodbye, I ask you to remember that you are my only.
Love, Remus.
With tears cutting their way down his cheeks Remus placed the now folded letter on Sirius' bedside table and walked out of the room, unable to face the consequences of what he had just done.
If he had stayed another five minutes, he would have seen the slow, torturous breaking of Sirius' heart as his grey eyes drank in the letter.