I learned in Penn & Teller's "BS" (not gonna swear pointlessly) that back in Victorian days women were seen as an ornament for men. And since we can't treat women like sex objects back then, they had to talk about something else.
Hence weather as a topic of speech. With that knowledge, please please PLEASE stop talking to girls about their sign and the weather and whether they hang out at [wherever you two happen to be talking] often. Times have changed.
And with that comes the topic which is something along the lines of do you have any old fashioned ideas? How liberal are you, and how old fashioned are you?.
Personally I'm a complete lunatic. I scare myself when I think of how I would raise my hypothetical children, and I personally have beliefs which border on utter and total apathy / nihilism. It just doesn't matter in the end, is what I believe, and what is worth doing is what feels good now. Discipline, planning, pie....these things don't concern me.
I expect a future of needless suffering.