As they age, men look for increasingly younger matches. The median 31 year-old guy, for example, sets his allowable match age range from 22 to 35—nine years younger, but only four years older, than himself. This behavior leads to a ridiculous imbalance in the online dating world: most men send most of their messages to women barely out of their teens, while many perfectly good-looking and interesting women in their thirties and forties go unwritten. This article explains, in detail, why this silliness must stop.