My few points ,you should never denigrate your partner in front of others,just as you should never give one of your staff a telling off in front of their colleagues ,your not making the other person aware of a problem that they can help solve you are merely humiliating them and it suggests the person doing so may well be a bit of an emotional sadist.
It is also unforgivable to embarass and make uncomfortable the other people present especially in a social occasion that they are supposed to be enjoying.
Likewise whining about your problems ad nauseam ,all people have enough problems of their own without you adding yours to them.
Its different if theyve asked you how the job is etc.then its O.K. to BRIEFLY express your discontent and then move on.
Also if theyre good friends whos advice you value its o.k. to take them on one side and ask for their advice but even then if they appear reluctant to comment you shouldnt press them and should drop the subject.
If you have a problem that you cant or wont do anything about then keep it out of the conversation anyway.
Has it ocurred to anyone that the blokes heavy drinking could be BECAUSE of her nagging?
Or if he was already a toper when she met him she hasnt exactly done anything to encourage him to give up.
But now Im going to go against all of the above.
Ive known more then a few men who actually enjoy being nagged though they complain about it ,cos theyve always associated it with their youthful perception of marriage and by being married and nagged they’ ve made the manhood rite of passage in their eyes .
Or maybe it makes their partner maternal in their eyes ,both of these are guesses on my part as I loathe being nagged.
Ive also known a couple of guys who were desperately in love with the most selfish miserable bitches you could ever hope to meet
Interestlingly enough they were incredibly selfish and anal themselves but Im not saying your mate is .
Lastly it could be that she expressing her ire with him out of reasons that neither of them wish others to know about (out of embarassment maybe ?)but she still wants to pay him back.
A close mate of mine got a lot of public derision from his missus,everything from being crap in bed to being a boring conversationalist .after they divorced it turned out that she had found out that hed been unfaithful to her but was too ashamed to tell anyone else and he being the guilty party kept his mouth shut and took the shit.
But as the other posters have said stay out of it ,its their problem and not only do they know alot more about it then anyone else but they are quite likely to both take against you if you try to get involved even on a conversational level.