I think that this song is about a girl who had red highlights in her here "drops of jupiter". She hot and smooth "summer and rain", but she wasn't alway like that (maybe she was the nerdy one as kids?). When it says "listens like spring" maybe she was silent and sweet like spring flowers, and "talks like June" she might have had that mysterious warm voice that a summer breeze can have. I think that once she made it up the popularity ladder and left him behind with all the little people she found out that "heaven is overrated". Now he wants to know that if she's done with this phase of hers, if she can come back down to earth with him, but he's scared that because he's not Mr. Popularity that he might not be good enough for her. When they make a reference to "did Venus blow your mind" they might mean beauty and all that jazz meaning to much to the rich and famous and "anything you wanted to find" was obviously not enough. So basically he's asking her if all the things on that high hill were better than being down with the person who loves her.