If I Were a Man, I'd Marry Me, by P.S. Wall
Like the title implies, it's mostly "girl talk". But it's fun and sarcastic girl talk, about everything from relationships to cars to pets to family to travel... and of course more about men and relationships. Very humorous, very fun read. Easy to pick up and put down, since each individual story is so short.
A quote on dating younger men:
"Guys are like dogs. You wish you could take them all home when they're puppies. But after they've howled all night and slobbered all over everything, you come to realize that the ones who are already trained are much easier to live with."
(Hey, I'm not making any actual judgments here... my boy is younger than me! But the book made me laugh.)