This song is about Liz's inability to stay in a relationship. She sees other happily married couples, and wishes for that fairy tale love. She realizes that she actually could have had that if she had worked for it. Instead, she ended the relationship. This little excerpt pretty much sums that up:
"Once upon a time I was so restless in love
When things we're fine, I changed my mind just because
Now I see how wrong and reckless i've been
Each frog has a prince just waiting inside of him"
This song is about Liz's inability to stay in a relationship. She sees other happily married couples, and wishes for that fairy tale love. She realizes that she actually could have had that if she had worked for it. Instead, she ended the relationship. This little excerpt pretty much sums that up: "Once upon a time I was so restless in love When things we're fine, I changed my mind just because Now I see how wrong and reckless i've been Each frog has a prince just waiting inside of him"
You should have stuck it out, Liz.