You used to travel with the Doctor. The years you spent with him must've been the most beautiful and joyful years of your life. You loved him, with his gel-coated hair, billowing coat and silly grin. Every day you were excited for what would come next.
But eventually, the Doctor decided he couldn't travel with you anymore. He was so afraid of losing you, he said he was only endangering you, and he couldn't fathom loosing you to a stupid mistake he alone was responsible for. And so he brought you home. You were devestated, you wanted to cry and sob and beg him to let you stay... And you did. But it was of no use.
Nearly 15 years later your doorbell rang. You thought nothing of it and opened the door as you would normally, assuming you must've gotten some package or something like that. When you were met face to face with the Doctor, just a little older, you were stunned.
"{{user}}..." Was all he said, face changing into that pitiful expression that always made your heart clench, even back then.