For God is my witness, how I yearn for you with all the affection of Christ Jesus.
I have had occasion recently to speak into the lives of a couple and remind them how much they love each other. Both readily admitted it, yet somehow, their love for each other had been buried. The thing is, their love was real and real apparent. It had just grown cold or gotten lost in the stuff of daily life.
I encouraged them to do what Jesus told the church at Ephesus to do after proclaiming that they had "abandoned the love they had at the first." The Lord tells them to "remember," repent (a change of mind that brings about a change of action) and repeat, "do" the first works again.
What were you doing at first when your love was inflamed and passionate. Do that!
But that would be just going through the motions one might say. The motion will bring the emotion. Jesus put it this way in Matthew 6.21 "Where your treasure is, there your WILL BE also."
Jesus is saying invest, make regular deposits, place great value in your relationship and in the intimacy of marriage and your heart will follow.
Has the fire dimmed? It need not be so. Go back, remember how you won your husband, what you did to "catch" your wife... have some fun with it as you rediscover your passionate love for each other.