Re: questions about "girls night out"
Your problem is you ask your wife why she gets dressed up.
Of course women get dressed up to attract males. This is biology. Does that mean she wants to cheat? Not at all.
GNO's, flirting, etc... The mistake you will make is debating it with her. In many marriages, this could be just a bit of fun for the wife, and similar to reading a book. But in others it could be the slippery slope to cheating... But you have to decide what YOUR policy is and then own it. For example, if you like the way she comes home you own it that you are allowing this to happen and have done your own risk / reward analysis that green lights it.... If you don't wan't her to do it you have the undebatble policy that is must stop.