Death. Destruction. That was all he could see when he watched his world burn in fire, feeling his own flame dim down, almost giving out on life. But since he meet Rose Tyler in that basement, he could feel his old war torn flame starting to burn with life once more. It only got stronger each time he heard her laugh, seen her smile, watched the awe in her eyes as he took her to new places. Even after he was a new man, so to speak, his flame didn't die out for her. If anything, it burned hotter and brighter then ever before. With her, The Doctor didn't see the flame inside him as a reminder of what he had to do. Instead, he sees it as something else. Life. Warmth. Rose Tyler, the pink and yellow human, gave The Doctor a new flame to burn for.