How Will I Know?

You could be anywhere
a passerby might capture my eye unaware
you could be anyone
but how will I know when my time has come?
'cos in the middle of the day
or in the middle of the night
how will I know if it's you
how will I know it's right
and if it all comes down to me
to go walking up to you
there's one million little things
that I'm more likely to do
I kinda know you're there
a lifetime's knowing a life's undergoing unawares
you could be anyone
but how will I know if my time has come?