"Casual or Serious?
Men decide in the first few minutes. Learn to become his one and only."

This ad on facebook pisses me off.
If he's already decided that fast, she doesn't have time to learn. Either she will be his one and only, or she won't. I think it's pretty black and white. The only reason why there would be any gray area is due to the amount of time it takes for him to assess the situation and let her know what's what.

If I'm wrong about this one, please say so.