It's someone addressing a girl they have a massive crush on but who is about to sleep with someone else, basically saying "you're going to have sex with this guy and I can't really stop that but, you know, I think you and I would work out better". It's a lovely song, actually, amazingly sweet and lacking in bitterness (which would probably be the overall tone were this scenario to happen in real life).
It's someone addressing a girl they have a massive crush on but who is about to sleep with someone else, basically saying "you're going to have sex with this guy and I can't really stop that but, you know, I think you and I would work out better". It's a lovely song, actually, amazingly sweet and lacking in bitterness (which would probably be the overall tone were this scenario to happen in real life).