The one question I now ask every man before I let him waste my time

I was on a date last month and the guy spent one hour telling me about his 'crazy ex' and how she doesn't understand him. I just sat there nodding. Then I asked him one question: 'So what exactly did you do that made her act like that?'

Omooo the way this man started stuttering. Started saying 'it's complicated' and 'you know how women are.' Sir, no evidence. I finished my drink and told him I had to go and check my younger brother's school fees.

My rule now is simple. Any man who can't name his own fault in a past relationship will do the same thing to me. But my friend says I'm too harsh and that men just process things differently. Shey I'm the problem??