Die Hard or Die Harder "Parallel Worlds"

Foreword

Why does it always have to be parallel with antonyms?
Would always tag along with each other, but didn't really met.
Funny how the world was made with opposites. Neutron and proton for example.
They're not the same, but they do attract.
Just like us people. We're made of different individuals, but we do attract with each other. Pero hanggang attraction lang yun.

Makakasalubong mo, makakasama mo sa paglalakbay, but in the end... You will realize, na hindi parehong mundo ang kinatatayuan niyo. Either you walk on the dark side, or its him/her.

Parang north pole at south pole.

Hindi na nga pinagtatagpo.
Hindi pa itinadhana.

Why do we always have this differences? Why does the world always to have something parallel?