I liked LMBT, but I think you have to read these things in a certain order. I recommend DR/DB first because the focus is really on you. I like 5LL after that because it makes you start thinking about how you love and liked to be loved in a relationship. And after that, LMBT because at this point, you've generally showed your H/W the new you, have made significant changes for a long enough period that they can believe them, made certain your spouse knows how you feel, and are ready to work on your own self respect.
As far as the cheating thing goes, I have always found it interesting how people bend their own values in order to do what they want. Ultimately, you can only control you....so make that choice for yourself and leave H to make his own choice.