That is what found with antidepressents...pretty soon they don't work...and believe me I know how you feel...so done...so over it all...just want to move one...remember I filed for divorce TWICE!...looking back now I know it was impulsive on my part because it DID NOT change how I felt...I DID NOT "allow" me to move forward...finally I realized that the ability to move on was my own....BUT I had to properly grieve through the process...I think that is where you are now....
I understand not being able to stay business partners if things don't come back around....that is why I worded my response the way I did...you can work from home now with him...you have phone and email access for business and you can handle the way you did in Vegas if YOU choose to....then if he/you decide this R/M is no more...then you can still have YOUR home office to keep working the business for yourself....this also adds no pressure to him which is also a good thing....however, it lets him know that you won't be available at his beckon call....
I also agree that it is best to lay down boundries as they come up....so you don't sound like you have sitting around plotting the demise of his life....for instance...instead of telling him not to just come in YOUR house when he wants...or when he has had too much to drink...just change the locks!...change the code for the door opener to the garage...or disable it for now and just manually lift it up to up to put your car in at night....he will figure it out when/if he shows up again...and then you can state that you felt that you felt it was time to establish a boundry of your home....he is welcome if he is invited or makes prior arrangements but that you don't feel comfortable with him just popping in when he has been drinking or whatever...