This is a classic example of why you should firmly establish your persona with your girl and her friends from the break.
They should KNOW that you will bust on them in no uncertain terms if they do something a bit "off", instead of sucking it up like a politically correct stooge.
And if she and/or your girl gets pissed, be a man and state your case. Don't whine or run on argumentatively about it either.
They'll respect you for your honesty, if you do it right.
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