It's simple... she's not missing him. To me, this song is about a person who was hung up on a guy who treated her like crap and left her high and dry. In the past she still hung on waiting to hear from him, waiting for the one day he'd come back, but she was just afraid to move on. And now that she has, she realizes that she's giving up nothing, even if moving on is scary, it's better then what she had.
It's simple... she's not missing him. To me, this song is about a person who was hung up on a guy who treated her like crap and left her high and dry. In the past she still hung on waiting to hear from him, waiting for the one day he'd come back, but she was just afraid to move on. And now that she has, she realizes that she's giving up nothing, even if moving on is scary, it's better then what she had.