There's nothing that irritates me more than having to listen to someone complain about the same thing twice. In the court of law, it's called double jeopardy. I believe that while I do so love my friends, constant talk about how they were wronged twice by the same source is something I find tedious. Plus, it doesn't say much about the person does it?
Shame on him if he fools you once, shame on you if he fools you twice.