What is it that draws two people into closeness and love?

In being married 8 years, no profound marriage insight have I found as true as Sheldon Vanauken's words. Deyl and I are reading Sheldon's book, Severe Mercy, out loud to one another and enjoying it immensely together in Spain. What do you think of his insight? Is it the secret?

Here is the excerpt that touched Deyl and I deeply:

“What is it that draws two people into closeness and love? Of course there’s the mystery of physical attraction, but beyond that it’s the things they share. Total sharing we, felt, was the ultimate secret of a love that would last forever. What we must do now is share everything. Everything! If one of us likes anything, there must be something to like in it –and the other must find it. Every single thing that either of us likes. That way we shall create a thousand strands, great and small that will link us together. Then we shall be so close that it would be impossible –unthinkable –for either of us to suppose that we would ever recreate such closeness with anyone else. And our trust in each other would not only be based on love and loyalty but on the fact of a thousand sharing’s – a thousand strands twisted into something unbreakable.”

Thanks to our awesome friends, Chris & Emily Kates who recommended the magical read to us. We're thankful for our time in Spain that we get to be creating 1000 of twisted strands.