Maybe it's time to pull back on asking her to do things. Use your the space to have a little time for yourself.
Have you thought about the time your wife has the kids, for you to go out, alone, and maybe journal a bit. Write your thoughts out. Invite God into the conversation.
Here's another perspective. She is with OM. You know it and I know it. She's not playing you. Rather, you are playing her. Your messing with mind. You are drawing her away from him.