I've encountered a strangely large number of stories online of single men who decide to test the theory that married men are inherently more desirable to women by buying a fake wedding ring and wearing it. They usually report that this works miraculously, women are far friendlier and more approachable, which is immediately interpreted as flirting. The conclusion they draw from the data is that women are inherently cruel, selfish and greedy, because clearly they don't want the man unless they think they're stealing from some other woman.
I wonder how many of these women in these experiments actually just thought they don't need to be wary about this man mistaking friendliness for flirting, since clearly he's not looking to date as he's already making someone else miserable.