Hi! My advice is the same as the others: read or reread DR and that will help you. Also Puppy is on a trip now, but when he gets back should be able to give you some great advice on what to do.
I do think the hardest, lowest point of my life was when I lived with my H while he had an affair with OW, going on dates, and trips, etc. I should never have allowed that. It hurt way too much. Karen