Although the point of the song is to be heart wrenching, it is pretty much a love song.
The author of the song has put into words how much he needs this woman and is likening the pain of being away from her to wanting someone they couldn't have. Joe's emotion when he sings it does this theme justice. Thus, the song ends with the lines that aren't the chorus:
"And you're the girl I gotta have
I gotta have you baby, yeah"
Although the point of the song is to be heart wrenching, it is pretty much a love song.
The author of the song has put into words how much he needs this woman and is likening the pain of being away from her to wanting someone they couldn't have. Joe's emotion when he sings it does this theme justice. Thus, the song ends with the lines that aren't the chorus:
"And you're the girl I gotta have I gotta have you baby, yeah"