Quote:
I'd say it's best not to mention Exes in detail at all, but if the conversation is unavoidable then you have to do what you have to do. All is fair in love and war. I wouldn't flat out insult him though. The best idea is to use him as a tool to win over the target. Find out his faults and what she dislikes about him and show her how you are different than him. Use phrases like "he was a fool to treat you like that" or "If you were mine, I would never treat you that way". Women are suckers for lines like these.
I'm sorry Kalel, but I have to disagree wholeheartedly. I don't think you should ever say those lines under any circumstances, unless you are trying to make them just your friend. If you want to do something that achieves what you are going for there though, then say, "I never treat
my girls like that" or "I can't imagine a girl wanting to be treated like that by me" or something that doesn't make it sound like you are intending on getting with her, merely commenting on the fact that you aren't like that conversationally.