Doesn't that seems like a more accurate measurement? what's the percentage of adults who check "yes" for "friends i'm hoping to hook up with" versus those that say "oooh, you mean actual friends"?
Does it? It means different types of socialising a lot of the time, but couples often merges friend groups and I could definitely see a case for some subset of those friend groups ending up meeting up more regularly. I don't know. It'd be interesting to see data broken down by relationship status.