Alexander-The Seer and Changer of Time

I thought it was a dream. All of it. It was too good to be true, but now I have a choice to make. Do I go back? Do I save the man who's always saving others? Can I save the Doctor? "Oh Alexander. My Alexander. You managed to save one person... One big important person, hundreds of times over... and he doesn't even remember if he thanked you." 9-12 DoctorxOC (Classic Who later on)