Moon is always connected with romance. But how about viewing a rainbow under the moon? Do you think that is even more romantic?
A moonbow (also known as a lunar rainbow, lunar bow or white rainbow) is a rainbow produced by light reflected off the surface of the moon rather than from direct sunlight. Moonbows are relatively faint, due to the smaller amount of light reflected from the surface of the Moon. They are always in the opposite part of the sky from the moon.
Mars rising over Haleakala Crater Moonbow [link]