Fidelity

I think this song means that she never wanted to love anybody because she was too afraid to (I never loved nobody truly, always one foot on the ground) and what she did was loose herself in her music (and by protecting my heart truly I got lost in the sounds I hear in my mind ect.) and she feels she made a mistake cause once she found love and got a hold to see what if felt like she realized what she was missing (and by protecting my heart truly I got lost in the sounds I hear in my mind all these voices I hear in my mind all these words, I hear in my mind all of this music and it breaks my heart, it breaks my heart) also in the music video it shows her in the end happy with a guy so I think it means that she finally learned to let go