You can do as many mental back-flips to defend her as you want, but it still doesn't change the fact that she screwed you over and won't stop banging some busboy.  She is almost in her 40s and have five kids under 18 with you, but she's willing and continue to jeopardise all this just for a bit of extramarital excitement, which clearly tells you how little responsibility and respect she has for you and your family.  

&amp;#x200B;

If despite all this you're still begging her to stay with you, not only are you allowing her to disrespect you as a person, you are disrespecting yourself. Don't let her turn you into the sucker of this ghastly ordeal, have some self-respect and take charge of the situation yourself.

&amp;#x200B;

I know I might sound a little harsh but in situations as grim as this, you need someone to tell it as it is.