I don't think it absolutely needs to be about wanting someone to love you; I think it's broad enough to be about the feeling of, well, simply wanting someone to share the same sort of sentiment on a particular thing that you do, but not. The line about the plane makes me imagine a couple traveling, and he's really excited about their trip but she seems indifferent and he just hates that she isn't as psyched as he is.
I don't think it absolutely needs to be about wanting someone to love you; I think it's broad enough to be about the feeling of, well, simply wanting someone to share the same sort of sentiment on a particular thing that you do, but not. The line about the plane makes me imagine a couple traveling, and he's really excited about their trip but she seems indifferent and he just hates that she isn't as psyched as he is.