Site creator David Minns bills his new matchmaking app, 20 Dating, as the “Worlds 1st extreme age gap dating site.” The site only matches users with people 20 years younger or older than them, and photos are optional.

How much is too much of an age difference when dating?

According to the rule, the age of the younger partner (regardless of gender) should be no less than seven more than half the older partners age. Martin, then, shouldnt date anyone younger than 26 and a half; Lawrence shouldnt go above 34. The rule is widely cited, but its origins are hard to pin down.