Sounds like he actual cares about his wife, and wants to try to make it work, everyday there are couples out there where the man or woman has cheated and they try to work it out rather than immediately filing for divorce. To me that seems a more grown up way to go about it, but ultimately everyone will react to being cheated on differently, and if this guy wants to try and save his marriage rather than just straight up end it then props to him and I hope it goes well for them both.