I know what your going through... someone says a little thing and you break down and are a total mess.
I've been there too. Picture a big burly guy bawling at a grocery store. Cause he and his 2 daughters had a routine. They got free cookies and we visited the next door pet store (aka the free zoo wink ). Now your there by yourself.

Its the little things you miss.

But it does slowly get better. You become more focused and in the moment when you are around them.
Your spouse will prob experience this too. Might help you both.
Live in the moment.