I am so sorry you are having to go through this. Take Mona-Camille's advise, and get access to your money and take copies of all banking information.
I worked in family court for 10 years and if you are not prepared, he can take you to the cleaners. Are the bills in his name? Both names? Credit cards in his name? Both names?
Be sure that when you separate, if you have your name on any of the bills or credit cards to take yourself off the existing accounts and create new ones with just your own name. Write down everything from this point forward.
A man who can fall out of love with you because of your weight, is not the right one for you!
We are here for you and to support you, you are not alone...and one day when you are thin and even more beautiful than you are right now...the revenge will be yours sweetie!!!
Take care of yourself and your babies, take control now!