Re: Something isn't right, what should I do
If he's now offering to have the son and grandchild move in with his ex, and to re-home the dog, that's a start. But the doesn't entail him making any changes.
You may need to change tactics in regard to his weight. If you tell him how afraid you are that he's jeopardizing his health and is going to make you a young widow, he may get off his a$$ and do something. But he's 10 yrs older than you... most older men understand that if they want to keep that PYT that they need to up their game a little bit. You may want to start planning fun, active activities... and when he passes because he is too out of shape to go with you, leave him at home and do it on your own. He'll start realizing that he's missing out on time and making memories with you, and maybe that will spur him into action.
If he was in better shape, he would have more energy to help with stuff and generally do things.
Letting the house fall apart may or may not have the intended affect. Some people don't care about mess, and are perfectly content to live in filth. The saying goes, the one who cares the most is the one who does all the work. If you like it clean and he doesn't care... then you'll be the one doing all the cleaning, I'm afraid.
~Happily un-married since December 9, 2013~