Do you recall when we first met   You thought we were worlds apart   Now it's easy to see just how our lives should be   Every time I feel the beating of your heart   Who am I without you?   What am I if we're through?      You're my eyes when I can't see   You're my lungs when I can't breathe   You're the only thing I need   You are my everything, everything   You're my legs when I am weak   You're my voice when I can't speak   You're the only thing I need   You are my everything, everything      Even now I still can't believe   You thought we'd be better as friends   And it's hard to imagine where our lives would be   It's so easy to see how much I depend on you   Who am I without you?   What am I if we're through?      You're my eyes when I can't see   You're my lungs when I can't breathe   You're the only thing I need   You are my everything, everything   You're my legs when I am weak   You're my voice when I can't speak   You're the only thing I need   You are my everything, everything      I'll keep holding on just as long as you let me (as long as you let me)   I'll keep holding on, I'll keep holding on   Just as long as you believe in me      You're my eyes when I can't see   You're my lungs when I can't breathe   You're the only thing I need   You are my everything, everything   You're my legs when I am weak   You're my voice when I can't speak   You're the only thing I need   You are my everything      You're my eyes when I can't see   You're my lungs when I can't breathe   You're the only thing I need   You are my everything, everything   You're my legs when I am weak   You're my voice when I can't speak   You're the only thing I need   You are my everything, everything      You are my everything, everything   You're everything to me