Most of us think of St. Valentine as the patron of romantic love, thanks to the secularization of this day. But his love was for God, and he was a martyr for the faith.
Prayer to St. Valentine
Most Gracious Heavenly Father, You gave Saint Valentine the courage to witness to the gospel of Christ, even to the point of giving his life for it. Help us to endure all suffering for love of you, and to seek you with all our hearts; for you alone are the source of life and love. Grant that we may have the courage and love to be strong witnesses of your truth to our friends and family and to the whole world. We ask this through our Lord Jesus Christ, your Son, who lives and reigns with you and the Holy Spirit, one God, for ever and ever. Amen.