leave. your happiness is directly related to your childrens. a child can't be happy if thier parents are stuck in a stale disfunctional relationship. you will be happier and likely your huband will be as well. your children can only benefit from seeing thier mother in a happy healthy relationship. just be sure to keep things civil with your husband(or soon to be ex) so your children do not suffer from the results of the dissolution of the marriage.