What does it mean? "My first love was a castle in the sky ......"?

Question

RECKLESS KELLY - WICKED TWISTED ROAD

My first love was a castle in the sky

I never thought I'd make it till I had the guts to try

Then I sat up in my tower while the whole world passed me by

Yeah, my first love was a castle in the sky

Answer 1

its means that it was just a dream.

Answer 2

Love is a fairytale.

:]

Answer 3

it means, i had love, but love is only an idea and not really there. but you make it real. and then everything else you don't pay attention to anything to your love, or your castle in the sky