Should've, would've, could've

I should've told you when I have the chance,
what was I afraid of?
what was the worst that could happen?
losing you?
too late...

I should've told you when I had the chance,
now I'm stuck,
stuck here in oblivion,
stuck in a constant state of wondering,
wondering what could've been,
wondering what would've been,
wondering if you were the one,
wondering if you were my only one.