@Buttercup A suggestion for you to start?
Pick just one thing that is most important to you. What one thing would make you calmer or reassured when he isolates. Write it out
Be specific and keep it simple! Don't expect him to fill in the blanks or think that he knows how you feel because when I'm in that space I don't even register what other people feel.
for example: I didn't realize that hubby was worried when I took off. Seriously. It
never crossed my mind. I knew where I was and what I was doing. Why in the world would he be worried about me? Remember - isolation is usually survival mode. There are little to no brain cells left to think about other people
So one day, when we were both relaxed and in a good place, our conversation went kind of like this...
Him: "hey, I worry when you take off. Will you call or text me once each day so I know you are ok next time you need to run?"
I'm not asking you to change what you do. I'm just asking you to adapt a small part of it to include me
Me: "yes, but if I don't want to talk are you going to nag me and make me feel guilty?"
leave me alone asshole! I need to run!
Him: "No. I just want to know you are safe. Think of it as a check in."
I worry when you take off. I want to know you are OK. I'm not going to give you a bunch of crap for not sticking around and letting me help you because I know I cant
Me: (totally confused) "uhmm.. OK."
Well that's weird. I wonder why he wants me to call him? But, I can try - at least until he puts me on a guilt trip. then I can hang up and make him admit this check in thing is just a way to control me.
Nothing more. Just that. Ok - that's easy. I can do that. And yes - there were a couple times that I forgot. That was hard on him because he wanted to be mad that I blew him off. But I didn't, I just forgot. Eventually we got into a pattern. Then we could add "tell me before you bail so I know you are leaving" It was a long process to get those rules set and they HAD to be simple enough for me to remember in the moment. And it had to be something we did as a team.
I cannot imagine what it must be like on your side of the fence. So I hope this helps even a little.....