That depends on the girl I'd say. Try to find out what she's interested in.
For example, I'm interested in politics, programming, computers, AI, music, books, forensics, legal matters etc...
and I'm absolutley not interested in make up, horses, boy bands, popular music, fashion, home making, children or any of that stuff.
I'd give you the advice to talk about things that interest you if you're after something serious.
