Though I believe the song was intended to have multiple ways to be taken, I feel as if the chorus is the man telling the woman it looks like we literally "Made it to the end..." of the relationship. They get drunk and argue, and cannot stand whom they have become together, and thus despite the loving romantic vibe of the song, it really is a sad parting of ways, maybe with an implied hope of finding something better since this chapter is officially closed.
Though I believe the song was intended to have multiple ways to be taken, I feel as if the chorus is the man telling the woman it looks like we literally "Made it to the end..." of the relationship. They get drunk and argue, and cannot stand whom they have become together, and thus despite the loving romantic vibe of the song, it really is a sad parting of ways, maybe with an implied hope of finding something better since this chapter is officially closed.