Moving back in will make her life "inconvenient". Why should she get everything she wants and you get shafted. Why should she get to carry on her happy family life with the OM standing in your spot?
Move back into your house... even if she doesn't like it. It's your house.. and until she makes arrangements to live somewhere else you will have more time with your son...
Of course she's being nice to you now that you did what she wanted! And yes, she will cheat with om regardless of where you are living... but that house is yours and you are paying for it so get your butt back in there and stop being her doormat!
