Maybe it's time to lay it all down on the line.....how you feel, what you know (get proof), and what you want. Get emotional if you want, show him your feelings, don't hold anything back, and then follow through with what you will accept and what you won't accept. He knows it is not right for you to be with him when he is with OW, but he is doing it because he can. There is no dishonor in telling your H you will not remain married to him if he won't leave his affair partner.