How did I Fall in Love with You? (Backstreet Boys)

Remember when we never needed each other
the best of friends like sister and brother
we understood, we'd never be alone..

Those days are gone, now I want you so much
the night is long and I need your touch
don't know what to say, never meant to feel this way
don't wanna be alone tonight

What can I do to make you mine?
falling so hard, so fast this time
what did I say? what did you do?
How did I fall in love with you

I hear your voice and I start to tremble
Brings back the child that I resemble
I can not pretend that we can still be friend
don't wanna be alone tonight

Oh I want to say this right
and it has to be tonight
just need you to know

I don't wanna live this life
I don't wanna say goodbye
with you, I wanna spend the rest of my life

What can I do to make you mine?
falling so hard, so fast this time
everything's changed, we never knew

HOW DID I FALL IN LOVE WITH YOU?