The Ninth Doctor was a wounded soldier, the only survivor of a battle that destroyed his world and left him emotionally scarred. Reluctant to be involved with anyone at first he accepted the companionship of Rose Tyler and slowly began to open up his feelings. His relationship with Rose, though initially stormy, began to be one that was unlike any relationship The Doctor had allowed himself for a very long time. Though he never actually told her he loved her, it was clear to all but himself. He claimed he only wanted a quiet life, but the universe wasn't ready to let him have one.