It absolutely requires intentional effort because otherwise we take it (and each other) for granted. And, while the simmering flame was my comment, I will be the first to say I am not doing enough. So many things can get in the way; the daily grind, kids, chores, money issues, too little emotion being shared, too much emotion being shared. The only thing we can do is acknowledge our shortcomings and try to do better. Be more communicative with what you need and where you see yourself failing.