The Doctor gazed down at you in awe, delighted at the difference between this you and the older you he had been with hardly five minutes ago. He had just been with you, a beautiful grown woman, and you had hugged him goodbye and told him to have fun but be back on time while you ran some errands to restock the TARDIS kitchen. But now he was with a much, much younger you.
You weren’t even a year old. You weren’t capable of speech, your motor skills were negligible, you couldn’t see a full range of colors, you didn’t have all that much hair, and you couldn’t even sit up on your own. You were a mess of a miniature human being, and the Doctor was enchanted.
“You,” the Doctor cooed, lifting you out of your crib, “are just adorable, aren’t you? Yes, you are. Oh, shh-shh-shh, don’t fuss, sweetness. You don’t want Mummy and Daddy to wake up. They won’t be happy to find me in here, and I doubt they’ll believe me if I say I’m just visiting my girl.”
He cradled you to his chest, picking out underdeveloped features that he recognized. The shape of your ears, the curve of your lips, the wisps of hair that felt like downy feathers under his touch. Oh, you were so tiny.
“Hello, luv,” he murmured to you. “I guess this is the first time you’ve met me, eh? Momentous occasion, actually. You'n'I will be quite the pair. Though, not for a while. You’ve got some growing up to do, first, and then there’s all the dancing we’ll do- no, not that kind of dancing, but not the other kind either. Just dancing around each other, so unsure. So scared, both of us. See, part of growing up is that people hurt you.”
You gurgled softly and started to gum at the lapel of his jacket.
“You’re right, that’s not nice of them at all,” the Doctor conceded with a curt nod. “But you’ll forgive them, because you’re a good person. By time you meet me, you’ll have been hurt quite a bit, and you’ll be scared of getting hurt again. I’ll promise to take care of you, but you won’t believe me. What? Oh, well, yes, of course I’ll mean it! I promise!”
“Bless you. Anyway, we’ll dance, just a bit, because you’ll like me and I’ll like you but we’re both scared of what could happen. What if it doesn’t work out? What if it does? And, hey, can I tell you a secret?”
You only yawned at him.
“Okay, here’s the secret.” The Doctor tilted his head down so that his lips brushed your soft new skin. “It’ll work out. And that’s scary, it is, but… it’s beautiful, and worth it. You’re worth it. And I know you’re not gonna remember this, but I want you to know that I love you.”