AFTER READING YOUR SO WHAT HAPPENED:
Your words: It costs the ex-husbands wife nothing more out of her paycheck because they have the family plan.
Mama, If he wasn't married to her, he could be married to or hooked up with some loser who had nothing to offer your child. At least your former husband found something more then a younger, prettier, sexier CHICK, because he didn't have the good sense to honor his vows to you. The new wife and step-mother seems to have some family values. See the good and not the bad.
Blessings....
You are NOT over it IF "it still hurts". Yes the more insurance the better. I think you should "rethink" your attitude towards your former husband's wife, you may not like her, but if she is willing to do anything that will benefit your child, please accept it.
Double insurance, the percentage that your's pays (i.e. 60% or more, in some cases the remainder would be picked up by the other insurance carrier).
What I don't understand (maybe a typo) "son has only seen her bio dad"......
Bottom line, DON'T CUT OFF YOUR NOSE TO SPITE YOUR FACE.
Blessings......