Disclaimer: if I owned the Harry Potter world, Remus and Sirius would be at my mercy. But sadly I don't and unfortunately my fantasies can't come true. I don't own anything.
Summary: A letter to a lost love
My lost love,
There are times when I sit alone in my room, wondering about a path I could have taken. Before there was the Stag that came between us, would you have ever loved a Snake like me? The Wolf has told the young Lion cub that you were a gentle flower who sought beauty in those who cannot see the beauty themselves. But this Snake has given a foul remark that has tainted an already darkened soul. When will my salvation come to free me from this prison? My obsession consumes me even after you are gone and I carry the never ending guilt that was born the day I betrayed you.
Your child is one of the many painful reminders of my greatest failure to you. So I have given my vow to protect him until my dying breath. I will not do it for the boy, nor will I set aside my hatred for the man that took you away from me. I will not protect the boy because he is our last hope for freedom. I will not protect him because the Headmaster wishes it so. I will do it for you. I have always done what I've done because of my love for you. It's always been you, my sweet flower. It's always been about you.
With all my aching love,
The Snake who suffers alone
The man with the dark billowing robes covering his entire length read his words again before giving a satisfied nod. He took the letter and burned it with a whispered Incendio, scattering the ashes to the wind.
"Only for you." He whispered, and walked away from the one woman in the world that showed him kindness.