This is a beautiful prayer for your spouse. Though it’s a wife’s prayer for her husband, it can be prayed by the husband as well.
Most Holy Trinity, Father, Son, and Holy Ghost, Thou didst institute marriage in the earthly Paradise and in the New Law elevate it to the dignity of a Sacrament, attaching to it many graces. Grant to my husband and me the grace to live holy lives in so sacred a state and, by the practice of Christian virtues, to act always as is becoming a Christian couple. As thy minister joined our hands at the holy altar, so may we journey through life with one heart and one souls tasting its pleasures with moderation, enduring its sorrows with resignation and, at all times, mutually assisting and consoling each other. May Thy true and holy fear strengthen us to restrain the low desires of the flesh, and to serve Thee uprightly with pure heart and eyes and lips, in mutual esteem and forbearance! Grant that the children born of our union may be pure of heart and well-disposed in mind, and that they may gladly walk in the way of Thy Commandments. Teach us to be faithful images of the Holy Family of Nazareth, of the blessed foster-father Joseph, of the most devout Mother Mary, the most blessed Mother of the Child Jesus, that we may be made worthy to live under their protection, to die in their favor, and to be forever blessed in their society. Amen.