I think everything that happened this weekend is a step in the right direction. I want to caution you though these things don't usually turn around based on one reaction.
I am wondering that once he realizes you were not with another man and he gets a sense you are still holding on he won't revert back to his ways.
I think you need to make it clear you want to and are willing to work on the marriage but there is a short window of opportunity for you to so.
