Q&A How Can I Know If the Changes Are Genuine?

My husband has now had two affairs on two separate occasions. The first one was in 2010 and was with a young girl who was his employee and also a friend of mine. That one was an emotional affair, and after I caught them we went through counseling and work hard to repair our marriage. Six years later, almost the exact same thing happened again except this time it was much worse. I spent months warning him that it looked like he was putting himself into another dangerous situation only to be called crazy, and then he was engaged in a full sexual affair with this young girl for a period of several months. I finally did catch them, and we have now been separated since January 31, 2017. My question is he seems to be making changes on the surface, how can I ever know if he is actually making changes that will last? And I am afraid that I will never be able to trust him again, is there any hope for us?