Rose,
Pardon me if I am repeating myself...I may have said this to you before.
You can make a choice to stay married one day a time just like you do everything else..and because you are not sure. If I don't know what to do I often choose not to do anything, today.
Also about how to treat him? You can treat him the way you would want to be treated...at the very least with some kindness and you may find that you get that in return...at least most of the time.
It is a fact that we love people that we cannot trust or believe. Past behaviors have shown us that we cannot rely on their word. If you go into the index of your Al Anon daily readers there are pages about that very thing. It is easy to use the index to find an issue that is troubling you.
If he doesn't cook...you cook...he knows how you feel. You told him calmly so there should be no reason to yell about it if he fails again. He will expect you to because that is what you did in the past..... if you don't he is left to sort through his own behavior not pick apart yours. And you are actively creating change.
Hugs,
JT