Research indicates that heterosexual couples tend to differ in age by about three years and men tend to be older (Buss, 1989; Conroy-Beam, 2019). The standard three-year age gap has some wiggle room before age becomes salient. The larger the age gap, the more partners, and the public, might take notice.

How much of an age difference is too much?

This rule states that by dividing your own age by two and then adding seven you can find the socially acceptable minimum age of anyone you want to date. So if youre a 24-year-old, you can feel free to be with anyone who is at least 19 (12 + 7) but not someone who is 18.