@NikKay:
Your concerns are well-founded and you do appear to be handling the situation as best you can, given the circumstances.
My suggestion, if I may be so bold, is to bundle up the kids and take them to a sitter (or family member) several times a week over the next month or so and designate a little "me" time for yourself.
If he decides to join in whatever you plan on doing, then allow him, but definitely set aside things that focus on you.
This could alleviate the stress of handling things yourself and might ease those feelings of resentment. He obviously was able to do something right to get you to marry him, so give him a few more chances to reacquaint himself with what brought you together in the first place.
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