Not confused, still emotional, getting very angry

[BRNR]

Okay...here we go (maybe).

I have been emailing H about the kids doctors and dentist appointments that are coming up. While H has been good about the finances thus far, he just asked me if I would split the cost. While I have been managing with the money he does provide me and my earnings, I am not living off the hog rather than paycheck to paycheck. So my response to him was simply...

"Which cost are you looking to split? I really am at my max financially and not in a position to carry more when it comes to them."

Now push comes to shove, I will do whatever I need to for my kids, but anyone want to chime in on my response.

I am assuming he is starting to feel the financial constraints of his single lifestyle. And I expect that soon, he will start funny busy with his monthly contributions.

In my state, there is no such thing as legal separation, and I will have to file for the divorce to get spousal and child support to maintain some help financially.

Anyone want to share their experience or advice on what I should do.