So, still no opportunity to talk, but I thought from the way H was behaving yesterday that he had moved out of denial slightly.
WRONG !
This evening he was cautious around me but chatty, paid me a compliment about my outfit (unheard of!), settled down with a beer with me in the kitchen to talk about our days.
Then when the DC had gone off to watch something he suggested spending the evening together looking at photos of "our little family". 
I just looked at him in shock and surprise, and then - saved by the bell - my mum rang.
He's taken himself off to bed so I guess I'm on the sofa again.
I think he must have chatted to his therapist about "having a postitive mindset" and is still thinking that all he needs to do is pay me a bit more attention and we will be fine.
It almost reeled me in but I have spent today texting the landlord about contract and looking at furniture online and so I am almost out of the house in my head anyway.
I feel bad for him again because he is being so clueless but I'm really quite cross about how he doesn't take me seriously at all.
The "looking at photos together" thing was something we had come up with together back in January as a suggestion for our one evening a week spent as a couple.
Totally past that stage now !!!