I don't think I agree with his premise about lust and desire. I think you can have both in your marriage. Lust being defined as "intense sexual craving".
There are times that you can feel so full of love you desire your spouse and other times it's just an intense sexual craving. Just normal human emotion and feeling, IMO.
He is equating "lust" with something you crave outside of marriage - always. I don't agree with that. It doesn't always have to be that way.
My two cents.