Have you and your husband accepted that it's OK for him to have an affair?
Telling him you don't like the affair, and then being nice to him are sending two contrary messages. You are saying, "This affair upsets me, but I'm tolerating it and will remain your loving wife."
Again, I think, you need to be less available for him:
1. No sex 2. Tell him you are done working on the relationship with him and need to move on with you life. If he's willing to stop contact with OW, then you might reconsider. 3. Get several night out, go have fun. That is SHOW him you are moving on with your life. 4. Make no plans with him. Do things for you an your daughter. 5. Set a time limit on this new way of being. 6. After the time limit, give him an ultimatum. Remember, Michelle writes about this. There is the LRT and then there's the After the LRT.
Olive, how long do want to remain in this impasse of your husband having an affair?
Knowing there's an end to this for me has helped me a lot. It's quite simple: When we are able to divide a household, if my wife is still in contact with OM, I'm divorcing her.