His love isn't enough to fulfill her. She knows she's loved, but there's something out there that is pulling her away and leaving him is a sacrifice she's willing to make even though it's painful. When I listen to to this song I'm left wondering what she finds, and if she found it does she goes back? Maybe she goes back and he's moved on, and she's faced with the reality of what she sacrificed. Ultimately, the question is, does she learn to breath again?

I came across this song during a time of transition very similar to the circumstances in the lyrics. It'll be my go-to when I'm searching for a little validation that I made the right decision.