still, I'm the main character in my own life

Met a man, felt like.. I've finally found him, the other half of my heart.
But.. how can one be so sure? not even me..
Even if I can turn back times, I know that I'll still choose him out of all the men I had ever met, does it mean that I'm sure we'll be together happily forever and ever like in the fairytale? nay... it's only mean that I have no doubt with my choice, and I'll live with my choice with no regret.
Still, I can't help to worry sometimes, I saw many cracks in us, and I don't know how to cover or live with it.. yet.  
Hahaaa.. idk why I felt so desperate, we're not even in a quarrel right now, perhaps daniel bedingfield can describe my feelings better with his song "if you are not the one".
My mood is bringing me down, guess I'm upset, idk whether I'm upset to you, to me or perhaps to us.