At the older end of "teens" - a lot of people enter partner dance scenes when they're starting college. So 18-20-ish. (I'm a late bloomer, only started dancing

At the older end of "teens" - a lot of people enter partner dance scenes when they're starting college. So 18-20-ish. (I'm a late bloomer, only started dancing at 25.) And at that point, yes, they start to do everything on Facebook.