If you think buying flowers is romantic, consider the animal kingdom’s version of a "grand gesture."

In the crushing darkness of the deep sea, the male anglerfish is tiny (1 inch) compared to the female (2 feet). He finds her by following her pheromones like a homing beacon. Then he bites her belly. His mouth fuses to her skin. His eyes and internal organs dissolve. Their blood vessels merge. He becomes a permanent, living sperm-producing appendage on her body. One female can carry six such “husbands.” He never eats, sees, or thinks again. He is, in the most literal sense, consumed by love.