As for that ideal age difference, researches believe that a one-year gap is the sweet spot, with the chances of divorce standing at a much smaller 3%.
Still, as we said, this is just data, and while researchers may have noticed patterns, every couple is different and other factors - like children, behaviour, and plain old compatibility - can impact the results also.
While there may be the occasional romantic twosome among the members, the majority are unattached.
If anything, youngsters in the group spend as much time interacting with their same-sex friends as they do with members of the opposite sex. Ron Eagar, a pediatrician at Denver Health Medical Center, views group dating as a healthy way for adolescents to ease into the dating pool rather than dive in.
They march off en masse to the mall or to the movies, or join a gang tossing a Frisbee on the beach.