Sharing the Truth in Love: Premarital sex
By Ben McCullough | For On Mission
What is love ultimately meant to do in us? Most people instinctively sense that love is central to a meaningful life, even if we struggle to articulate why. Some say love is something we define for ourselves, shaped by preference and emotion. Others believe love is a gift with its own structure — something we receive, discover, and grow into. Catholic teaching holds both truths together. God gives us desires for closeness and intimacy, but he also calls us to shape those desires so they can lead us toward genuine freedom and joy. It is within this larger vision of human flourishing that the Church situates its teaching on premarital sex.
Attraction itself is never the problem. Human longing — whether for affection, touch, or intimacy — is part of the fabric of our nature. These movements of the heart arise within us; we don’t choose them. They are, in a sense, something that “happens” to us. Morality begins not in the feeling but in how we respond. Just as anger only becomes harmful when it leads us to injustice, so too sexual desire becomes virtuous or sinful depending on the choices we make in response to it.
The Church’s teaching on sex begins with the conviction that our bodies speak a language. Sexual union expresses a total gift of self — one that is faithful, lifelong, and open to new life. “The Catechism of the Catholic Church” puts it simply: sexual union is meant to take place within a “personal and truly human” experience, where the context is a “complete and lifelong mutual gift of a man and a woman” (CCC 2337). This teaching reflects how the Church understands the meaning God has woven into our bodies and our relationships.
Premarital sex falls short of this meaning— not because affection is wrong, nor because desire is unholy, but because the act expresses a permanence and a total self-gift that has not yet been promised. The commitment, though perhaps deeply felt, is not yet lifelong; the bond, though real, is not yet sealed by the covenant that establishes a family. Outside of marriage, the language of the body says more than the relationship has yet chosen to promise.
This teaching is challenging in any age, but especially in a culture that often sees sex as primarily emotional or recreational. Yet the Church insists on this point because it holds a highly dignified view of the human person. We are not meant to give ourselves in pieces. Love is meant to be whole, faithful, and fruitful.
As “Familiaris Consortio” by St. John Paul II teaches, the fullness of a human sexual relationship “is realized in a truly human way only if it is an integral part of the love by which a man and a woman commit themselves totally to one another until death. The total physical self-giving would be a lie if it were not the sign and fruit of a total personal self-giving, in which the whole person, including the temporal dimension, is present: if the person were to withhold something or reserve the possibility of deciding otherwise in the future, by this very fact he or she would not be giving totally (“Familiaris Consortio,” 11).
Every one of us falls short of love in countless ways. Christ meets us there — not to shame us, but to call us deeper. His mercy is never withheld from a sincere heart. Through the sacraments, prayer, and community, God offers real strength to begin again. Chastity, often misunderstood, is not a rejection of love but a school of love. It frees us to give ourselves honestly, without pretense, without fear, without fragmentation.
For those who are unmarried, chastity means reserving sexual intimacy for marriage, where the promises of fidelity and openness to life give the act its proper home. For the married, chastity calls for fidelity, patience, and generosity. In every state of life, chastity is the virtue that helps us integrate desire into a life of authentic love.
Ultimately, the Church’s teaching on premarital sex is not a barrier to happiness but a guide to the kind of love that endures. Christian living is never about perfect performance. It is about trusting that God’s plan for love — even when it asks something difficult of us — is grounded in his desire for our flourishing. When we hold that truth close, we can approach even the hardest teachings with both clarity and hope.
Ben McCullough received a bachelor’s degree in liberal arts from Wyoming Catholic College and a master’s degree in sacred theology from the International Theological Institute in Austria. His career has taken him around the world. He currently works in Catholic health care in mission and ethics roles.