I'm so sorry that you are having to deal w/this. So, he won't leave...then the master bedroom becomes yours and he must seek sleeping accommodations elsewhere. If accommodations aren't comfortable enough for him, he just might leave. Time to start reducing the amount of wifely things you've been doing for him.
That is a bunch of bs about you putting your needs before your children's. He's pulling crap out of the bag of mlc tricks to make you feel guilty for asking him to leave.
Give yourself a break today. Put your faith in God and he will show you the way.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
