No expert, but if you move back in she will go batsheet crazy and if you cave in and leave again it will show you as weak . It would be a bold move that could lead either way . Saying that ,there is no chance of saving your marriage or family whilst she is in an affair. Personally I would leave it , your emotions are high and I bet you are flip flopping in your mind . Take a break , watch some comedy on tv and give yourself some time
