DY: R’ Moshe has 2 Chiddushim. He extends the concept of “Kiruv L’Arayos” to just talking (which he quotes from some earlier sources but is not so Pashut) and claims that all talking within the context of a friendship with the opposite gender is Derech Chibah.
Agav, I have no idea what the Heter for dating for marriage is. If talking can be Derech Chibah then certainly talking to a date after a few weeks (or K”V a fiance) is Derech Chibah. So either everyone is Over this Issur Chamur, or we assume that when the goal is marriage someday then we assume there is a different Toeles in these conversations and therefore they are not inherently a violation of Kiruv. So what’s the difference whether that Toeles is 6 months away or 3 years away?