This song is about putting your foot down and walking away from something that isn't giving anything back. In this case, it looks like the guy is telling Sara goodbye in the first stanza, but by the second stanza Sara is describing her their relationship. They aren't together, they are betwixt and between. Hence, "'Maybe,' it's a vicious little word that can slay me." and "Well no more, I won't beg to buy a shot at your back door." Sara is describing that she's just a last resort option for the guy who is playing the field. And while Sara is giving him everything, she has decided it's time to walk away from being an option. And while she wishes that he'd want her with the same intensity that she does, she accepts that he won't ever and that she'll be fine without him.
This song is about putting your foot down and walking away from something that isn't giving anything back. In this case, it looks like the guy is telling Sara goodbye in the first stanza, but by the second stanza Sara is describing her their relationship. They aren't together, they are betwixt and between. Hence, "'Maybe,' it's a vicious little word that can slay me." and "Well no more, I won't beg to buy a shot at your back door." Sara is describing that she's just a last resort option for the guy who is playing the field. And while Sara is giving him everything, she has decided it's time to walk away from being an option. And while she wishes that he'd want her with the same intensity that she does, she accepts that he won't ever and that she'll be fine without him.