There is two problem with your relationship.
The first one is that there is that girl who is actively trying to ruin your relationship. You have noticed that and is trying to fix it. That is good.
But the second one, the most dangerous problem, you have failed to recognized. Your husband has lost all of his respect for you. He don't even listen to what you said.
Your relationship is dying from the inside and to some extend, from the outside.
If you want to save your marriage, you have to fix it from the inside out. You have to add back the attraction, you have to make him wants you like the first day you met.
If you can do that, no girl can even compare to you in his eyes.
So here is what to do now.
Realize that the problem is not the girl, but it is your relationship.
Stop getting jealous over that girl (nobody want and over protective wife and jealous wife).
Start dressing more provocative, make him remember why he choose you in the first place, and why he should dump the other girl.
If you follow my instruction, you will get him back in no time.
You should also read this article on how to save your marriage. how to save my marriage
In addition, you should get the save my marriage today program by amy waterman.
My friend bought the product and it helped her save her marriage.
She love it so much that she wrote a review about it.
You can read her review here save my marriage today review