I have just found out that my husband has had an affair. It started 6mths after I finished treatment and has finished now. My libido and intimacy post surgery made sex fell like a chore and he knew it...
I am so sorry to hear that - some things can be better kept to yourself. As @arpie said, you need to rebuild trust if you have decided you want to salvage the relationship (or at least get to the point where you can make a decision). I get the libido thing but he is a grown-up and you've been through hell. So, I suspect that you both need some sort of couples counselling and probably individual counselling as well to get over this.