Holy Crap! Didn't expect THIS!

[Dom R]

Props to what Lotus said

Plus-

Trixi... some people have a "planned trial separation". you need the opposite. You need a planned living-together.
Just "seeing if it works" aint going to cut it and you know that already. you've already said it to him.
Now, what are you going to DO about it?

Sounds like you need a specific, non-wishy-washy plan.

I would suggest dont even discuss details, and feelings, and "do you think doing it THIS way might work...?"

because you already know he hates discussing that sort of thing.

Just come up with a specific plan of action, and make sure he "signs off" on it, BEFORE you move in together.
As to what to put in it...

I think you've already read the Harley books, so you know one plan could be to make sure you have 20 hours a week of positive time together.
So you might put that to him.
Dont discuss it with him, dont say where you got it, dont explain in too much detail WHY you're asking for it.
I'd just suggest saying to him,

"I think that in order for us to really make a go of it, we need to commit to spending AT LEAST 20 hours a week of fun, positive time together.
This REALLY MEANS A LOT TO ME.
Are you willing to commit to that,every week, no excuses?"

I think that if you put it to him positively yet firmly, he might agree to it.. and then you could have a good chance?