Just a little fic that won't leave my brain. :)
Disclaimer: The lovely J.K. Rowling owns the following characters; she's kind enough to let us borrow them.
Sometime during OotP:
His tears fell fast and thick onto the yellowed photograph. The moving sight depicted a grinning boy. Lifting the Quidditch Cup among the many cheers of his House, the boy appeared restless, unsatisfied, looking for someone else, the one person who will truly understand. His dark eyes darted through the crowd. He was pushing between the fans, searching ceaselessly. The cocky grin falters.
Though his tears are increasing, Sirius reaches down and strokes the dark-haired boy's cheek. He never wants to see that smirk fade. He'd give anything just to see that face again. The eyes alight and searching for Sirius. If only those eyes could move again.
Nothing can be undone. He knows this. But. He wishes. Every night. Everyday. "I'd change every moment we've ever had, especially this one. I should have been there with you. Celebrating. I was too busy with my own life. I'm so so sorry." He's yelling now, but no one is here. "Please forgive me. I'd do anything to have you back!"
"I killed you. It was my fault. I could have been there for you. Why am I still alive without you? It's not right. You should be here. Right here."
The door bangs shut and Remus crouches by his old friend. "Oh Padfoot. He would have wanted you to be here, alive."
"No, Moony. I should have saved him."
"It wasn't your fault Sirius!"
"It was. Is that why this hurts so much? My fault, my total immersion in pain?" He's still compulsively stroking the boy's pale face.
"No. Because he was your brother. Your family. Regulus will always be in your heart. Hold him there. He will stay forever, because he loved you, Sirius. You know that."
"But - You're right, Remus." With a heavy sigh, he roughly scrubs his face and sets the photo back in the box.