Her.

" have you ever heard of the phrase, 'if you love something let it go, and if it comes back it is true love'? Well she left, never came back, and that mistake hit me hard, she was the glow in my eyes, the reason for my smile, the light of my life, and i let another human being take her, I'm lost, I'm lost without her and i don't know what to do anymore, I'm just a lost boy with lost feelings"