Two lovers in the rain have no need of an umbrella.
More Japanese Proverbs:
Life without endeavor is like entering a jewel-mine and coming out with empty hands.Japanese
You can see heaven through the eye of the needle.
Japanese
The caged bird dreams of clouds.
Japanese
Fast Ripe, Fast Rotten.
Japanese
The sparrow flying behind the hawk thinks the hawk is fleeing.
Japanese
When you do something wholeheartedly, you are not in need of helpers.
Japanese