A Thousand Years, Christina Perri
This is exactly how I have felt, at times, about adoption, about Alexa, about all my future babies. And I kinda hate that it's Bella and Edward's theme song...not because I necessarily hate Twilight, it's just not how I feel about Nick, so I think the song is misinterpreting itself. Yeah, I know it's silly, but it's the truth. Beautiful song. Enjoy!