I am trying to find a music video based off a description of the video' storyline.

From the best that I can remember it was two neighbors, a boy and a girl, who grew up playing in a tree house. When they are older, she is moving away. The two go to the tree house and it is transformed. For example, they brought hostess cupcakes and then those were a fancier meal. Also, they started dancing a waltz together.

It was a more indie band with ballad almost.

Sorry this is not much to go on, but I would appreciate anyone who might know what it is from.