You know, having talked to lots of couples, I noticed the following thing ‒ they really look alike. I mean not only their appearance. You can notice those special things not only in their reactions, facial expressions, smile, glance or any other non verbal communication. This similarity goes much deeper.
And much more meaning stands behind “we are a couple”. It is completely different relations. It is a similar way of thinking, word game, jokes, pinging back and forth and even “end the phrase” game.
One might think it is unlikely to be true. And even if it happens, indeed, than only between a brother and a sister, or between friends having been together since the very childhood. But again, it is all about the couple who’ve created their relations on the most profound and complicated level. They represent a unit of two but still remaining personalities. It impresses!