Can I still love my husband, and honor him?
Of course you can - why not?
I know he has ripped your heart out and caused you deep pain, our natural reponse is to be angry and to even out the playing field and return the pain. Being angry is OK. How you repond to it is another matter. Telling him your marriage was a promise. Tell him you meant until death do you part, not until I'm not happy, or not until I don't feel in love, etc. Your choice is to still love him anyway in the midst of his choice to do otherwise. The issues that you have brought into this marriage, will not go away in another. He has a devoted wife now who loves God and wants to love her husband.
He has made a choice, the papers are not filed, you can make a decision to protest this and wait - it doesn't mean you have to go along for the ride, lay down and roll over.
If he can't make you a promise that he will never see this other woman again or have contact with her - I think that says a lot.
I hope you can pick up the book
Every Heart Restored by Stephen Arterburn.