Don't give positive reinforcement to "bad behavior". IMHO, her response is bad behavior. If you give flowers/candy/expensive dinner in response to her emotional blackmail, you're going to get in the habit of having to do it every time she decides to get in a snit. Sorry, I don't buy into that. You didn't screw up.
And yes, I'm married (seventeen years, and one month exactly). I agree with the man who said to save the flowers for when she's not already upset.
And yes, I'm married (seventeen years, and one month exactly). I agree with the man who said to save the flowers for when she's not already upset.