Hi, I'd like to help you with your question.
Your situation sounded ok until you got to the part about your husband refusing to go to counseling. The fact that he is refusing to deal with this issue and he is aware that it bothers you is a red flag.
It sounds like you may have not regained any trust in your husband after the original affair. It takes a while to build trust back up and that may be contributing to your feelings about these women who are communicating with your husband and his refusal to stop.
Because your husband includes you in his friendship with these women does mean something. It means that he wants it clear to them that he is married and by making you known to them, it may stop any questionable behavior. But that premise must be backed up with trust. And if you do not trust your husband, then you are going to be suspicious no matter what.
Has your husband acted in a trustworthy manner since the affair? Has he accounted for his whereabouts, been available to you when you needed him and been where he said he was going to be? Has he allowed you to talk about the affair when you needed to and has he accepted responsibility for it? Those are all good signs that he cares about you and wants to repair your relationship.
The best option in your situation is to tell your husband that you still feel bothered about his prior behavior with the affair. Let him know you need the help of your counselor but also his assistance to deal with your feelings about trust, especially with the current situation. If you ask for his help, most men will respond to that. If he still won't go, you may want to tell him that your past trust issues are making it hard for you to be ok with the current situation and you need him to either stop or go to counseling with you. He needs to make a choice here between his need to talk to these women and your feelings.
I hope this has helped you,