I think that’s a perfectly reasonable concern. Just because of someone’s reasoning or justification for cheating doesn’t mean you have to accept them by staying with them. I know many people who just couldn’t move past it and eventually left their partners. I do know some who have been able to move past it, but it took a LOT of work on BOTH partners’. Both people have to be willing and able to make changes for it to work. I highly recommend the book Too Good to Leave, Too Bad to Stay for helping with that. All the best!