Days later I asked him to please let me know if he started PA or EA as a basic boundary. He said this was "all agreeable" to him
He won't tell you, so don't expect it. If he's moved out so he can see other women, he is ALREADY seeing other women anyway, trust me.
He's just not man enough to be honest about it yet -he'll think he's "protecting you" but really he's protecting himself from having to deal with the consequences of his actions.
Your best bet is to focus on YOU, on creating a life that you want for yourself, finding the parts of yourself that you lost in the marriage. He'll want to think you are just sitting there waiting for him to come back - a comfortable Plan B. Don't let him think that! let him worry that you might move on before he has made up his mind. Make your life look so interesting and fun that he wonders why he left it.