thinking by just looking at each other.
You can't even remember what it was like to be without them — and you don't want to!
They challenge you every single day.
They know exactly what to do to calm you down when you're mad, to help relieve your stress, or to cheer you up.
They also know exactly what to do to get under your skin . . . and they at least attempt to not do those things.
Even after years of being together, you still have great chemistry.
You are completely comfortable in their presence.
After spending a few days apart, you both talk a mile a minute to catch each other up on everything you both missed.
It feels like you've known each other your whole lives.
You disagree on some things, but are always on the same page when it really matters.