夫婦水入らずが気楽でいい。

tbd

It is good to feel that nothing can come between a man and wife.

It's so nice to be by ourselves.

たまには夫婦水入らずで温泉に行ってのんびりするのもいいもんだ。

tbd

Sometimes it's good for a married couple to go to a hot spring together—just the two of them.