I think the person she is singing about in this song uses their head more than their heart. She acknowleges that their relationship feels "right" when they are together. However, when 'push comes to shove' her partners heart is'nt as invested into the relationship as what hers is, so she has to end things. She is also saying that its painful that her 'ex' will handle the break up better than her (with a happy boppy spin to it).
I think the person she is singing about in this song uses their head more than their heart. She acknowleges that their relationship feels "right" when they are together. However, when 'push comes to shove' her partners heart is'nt as invested into the relationship as what hers is, so she has to end things. She is also saying that its painful that her 'ex' will handle the break up better than her (with a happy boppy spin to it).