My original thought when I listened to this song was that Tom and mary had some crazy news they were keeping to themselves, to "benifit" eachother, maybe even to keep their lives more private from others in a way.
Their friends and family have no clue whether Tom and mary are aware that they know somethings up, they don't know what that may be, so that's why I feel it's never explained: they know something up but have no idea what that may be.
My original thought when I listened to this song was that Tom and mary had some crazy news they were keeping to themselves, to "benifit" eachother, maybe even to keep their lives more private from others in a way.
Their friends and family have no clue whether Tom and mary are aware that they know somethings up, they don't know what that may be, so that's why I feel it's never explained: they know something up but have no idea what that may be.