They say opposites attract.

So true. I am yet to meet a couple that agrees on bedtime, fan speed, A/C settings (or the need for an A/C), preference for sweet / spicy food ..the list is endless.

Every time you talk to a couple for a long time, these differences creep up. You find yourself identifying with one half of the couple, your spouse with the other half. Need not be the same gender.

You will say "hey, I am like that too and my husband is like the other one"

As, rightly pointed out. I wouldn't want to be married to myself. Thats a scary thought!