You shouldnt.
Don't . Try being more understanding. I suppose you have never told a lie.
doesn't make you feel bead or guilty about it. For example, stealing will make you feel kinda bad.
Act on it, or don't. It's your decision to make.
I'm not usually this ugly?
Guilty - Not Guilty - Nolo Contendre. The last being Latin meaning; I don't plead Guilty but I acknowledge that there is probably sufficient evidence to convict me. In juvenile courts the pleas can be 'Involved'" and 'Not Involved.'" Same as guilty and not guilty but it sounds nicer.
Kinda. It can make you thinner which can help you become a model.
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No. It's wrong for your friend to say anything. The ex-wife would only attend if she had to accompany their small children.
you shall tell your friend to stop and make them go out together
Well first apolgolize for being mean, & just give her some time. It depends how mean you were, she may accept your apology but is still hurt & now her way of lashing is to make you feel guilty. Just keep aplogizing until she is ok with everything, good luck.
By being nice to her! Duh!
Tell your friend how their relationship makes you feel and see if she does anything about it. If he is you Ex, then it shouldn't matter too much unless you still have feelings for him. Try to get over him as best as you can, dont try and make your friend feel guilty either. :) :)