Hi Op
I think your husband is struggling with a range of emotions Regrets, at type of relationship he had with Grandfather, who's passed,
Maybe Grandad had severe Dementia, Obviously due to his advanced age, so the Grandfather he known most of his life, was just husk of himself, and been like for several plus years,
Also realisation of his own mortality, is real,
What kind of relationships does he have with his rest of his family Op@EyeEyeBoom
Maybe they are not a close family or are a severely Dysfunctional type of family?
so lacks the emotional support to lean on cause of that Maybe?
I am not sure
So feels sense of hopelessness
I do think he is indenial he does need extra support from outside, for e.g therapy to get himself out of this emotional quagmire, he's stumbled into,
I think that's a lot of pressure that he has created in his mind, this fantasy of how us two against the world mentality of how home life reality is ,the humdrum sheer mundane nature of this,
He is far from unausaul having this kind of fantasy of how relantships are like v Reality ect,
I think you need to give him extra time, to grieve,
But later on down line give him ultimatum that he really needs to seek /address help as being a couple is like being a team, this helplessness ect ,can't carry on indentfinately