"You didn't make a mess of my life Doctor," Jack said, "I made a mess of it. I tried to do things the slow way..I tried to settle and fall in love. But I couldn't.....because I'd fallen in love with you from the moment we met. The TARDIS knew it too. Why do you think out of everyone she chose me for immortality. She could have made Rose immortal too, or given her immortality and let me die.

She knew I couldn't live without you so she made you a companion who couldn't leave or age or die. Someone special just for you. I've been trying for centuries to get you to see that but you never do. So I gave up...got married, had children but I couldn't forget you Doctor. I even let the Master make me a toy just so your plan would work...and all because it was how I could show you I cared."