Your H is definitely interested and curious with the "new" Cas. Sanderika is right, his interest has been sparked by your appearance of being able to manage perfectly without him. This is the very thing that jolted my H out of his fog or whatever you want to call it, the thought that I didn't need him, could manage and possibly had someone else.
I agree with Sanderika, you could initiate an invitation to him now to do something with you and I am sure he will responde positively.
