To me, it's about being in a relationship with someone who has a melodramatic, exaggerated view of how love is supposed to be. She gets an increasingly idealistic kind of view of being in love, until it bursts apart and she wants to break up. But the person who's singing still wants to be with her, because he also has this romantic attachment to her, so he's still thinking about her afterwards.
To me, it's about being in a relationship with someone who has a melodramatic, exaggerated view of how love is supposed to be. She gets an increasingly idealistic kind of view of being in love, until it bursts apart and she wants to break up. But the person who's singing still wants to be with her, because he also has this romantic attachment to her, so he's still thinking about her afterwards.