I think it's a story about a guy who wants to settle down and she keeps leaving because she's not quite ready, but comes back because she doesn't want to not have this oppurtunity when she is ready. This is backed up the most by the line, "She's got the blond hair, but not the blue eyes. I've got the right girl at the wrong time." Meaning she's beautiful and he really likes her, but she's not ready for something so serious.
I think it's a story about a guy who wants to settle down and she keeps leaving because she's not quite ready, but comes back because she doesn't want to not have this oppurtunity when she is ready. This is backed up the most by the line, "She's got the blond hair, but not the blue eyes. I've got the right girl at the wrong time." Meaning she's beautiful and he really likes her, but she's not ready for something so serious.