Two bodies, one flesh
6 reasons this purity culture teaching is damaging
The RHR Digest | Publication Date: October 31st, 2025
Key Points:
Having been steeped in purity culture throughout my adolescence and young adult years, I frequently heard about the “sacredness” of sex.
And along with that came the understanding that when a husband and wife engage in sexual intercourse, they become “one flesh.”
This notion of “two becoming one” is often derived from passages in the Bible, such as Genesis 2:24: “Therefore a man shall leave his father and his mother and hold fast to his wife, and they shall become one flesh.”
At the time, I didn’t question this teaching.
It felt holy. And “right.” And maybe even a bit romantic.
Only much later on did I realize how this teaching blurred boundaries in deeply damaging ways.
In this newsletter, I want to explore why this “two bodies becoming one flesh” messaging can be so harmful—both to individuals and to relationships.
Why This “Two Bodies, One Flesh” Messaging Is Harmful
While the idea of becoming “one flesh” might sound romantic or spiritually meaningful on the surface, it creates a framework that can undermine healthy relationship dynamics in significant ways.
Below are some of the key reasons this messaging is so problematic:
The Loss of Individual Identity
The emphasis on becoming “one flesh” often leads to people prioritizing their identity as a couple over their individual identities.
This type of thinking is problematic because it tends to suppress personal growth, independence, and self-expression within the relationship.
As the relationship progresses, you may feel pressure to conform to your partner’s desires and beliefs, rather than continuing to develop your own interests, goals, and values.
Over time, you may find yourself becoming more resentful or as though you’ve “lost yourself.”
Unrealistic Pressure and Expectations
The belief that sex creates a sacred unity between spouses may result in unrealistic expectations or pressure to conform to certain sexual norms or behaviors.
This can be particularly challenging for folks who have differing sexual desires or preferences.
In fact, because purity culture requires abstinence prior to marriage, partners often come into the union not knowing what their sexual preferences or desires even are.
Ultimately, this can also lead to feelings of inadequacy or failure if one partner is unable to fulfill the other’s expectations—or the expectations that were placed on them by the religious group they were indoctrinated into.
Problematic Sense of Ownership
When you view your partner’s body as though it were literally part of your own body (or when your partner views your body this way), it can foster a troubling sense of ownership or entitlement over the other person’s physical self.
This sense of ownership is deeply problematic because it fundamentally undermines several critical elements that are essential to any healthy relationship: mutual respect, genuine consent, and personal autonomy within the partnership.
Perhaps most disturbingly, this mentality also serves to normalize marital rape by framing it as a husband’s rightful access to his wife’s body, essentially giving it the church’s explicit stamp of approval and religious justification.
Difficulty in Setting Boundaries
The notion of “two becoming one” can make it significantly more challenging for each partner to establish and maintain healthy boundaries within the relationship.
When couples are taught that they should function as a single unit rather than two distinct individuals, the concept of personal boundaries can feel counterintuitive or even threatening to the relationship itself.
This blurring of individual boundaries can lead to a range of problematic issues such as:
Negatively Impacts Intimacy
Paradoxically, the goal of achieving a deep spiritual and physical union may actually hinder genuine intimacy within the relationship.
This is because you may focus more on meeting certain expectations or ideals rather than on cultivating authentic emotional connection with your partner.
You may also feel more anxiety about bringing up certain issues with each other that could enhance intimacy because you worry about “naming a problem” when the union is supposedly sanctified.
Perpetuates Staying in Dysfunction
The idea of “two bodies becoming one flesh” creates the mentality that you need to make the relationship work at all costs regardless of the level of dysfunction or unhappiness because it’s a “sanctified union.”
This mindset can perpetuate a cycle of suffering and sacrifice, often at the expense of your mental, emotional, and even physical well-being.
It can also make it difficult to recognize when a relationship is no longer healthy or beneficial for either partner.
Moving Forward After Deconstruction
So let’s say you’ve left the religious group that indoctrinated you with the “two bodies, one flesh” mentality.
Does this mean your internalized beliefs about sex and intimate relationships automatically shifted into something healthier?
Possibly.
But it’s more likely you’re still struggling with some of the issues I described above.
Ongoing challenges even after deconstructing are common because purity culture wounds run deep.
And our culture in general has a pretty dysfunctional perspective on relationships and sexuality, making it even harder to recover.
Without a clear model for what healthy relationships can look and feel like, it becomes difficult to distinguish what’s healthy from what’s unhealthy.
So what does healthy intimacy look like?
Let’s explore what sex therapy research has to say about maintaining individuality within intimate relationships, and why it matters so much for those recovering from purity culture messaging.
Why Maintaining Your Individual Self Matters
Sex therapy research emphasizes that healthy intimate relationships require two whole, separate individuals rather than two incomplete halves trying to merge into a complete whole.
Understanding the role of individuality in relationships is even more important for those coming from backgrounds where personal autonomy and agency were consistently eroded.
Next, we’re going to go over why maintaining your individual self is so important.
Autonomy Supports Desire
Sex therapist Esther Perel notes that desire requires separateness.
When couples become too enmeshed, erotic desire often diminishes because there’s no “space” between partners—no mystery, no otherness to be drawn toward.
Maintaining your individual interests, friendships, and identity actually fuels attraction and keeps the relationship dynamic rather than stagnant.
Emotional Differentiation Creates Safety
Dr. David Schnarch, author of Passionate Marriage, writes that true intimacy depends on differentiation.
Differentiation in this context is the ability to maintain your sense of self while staying emotionally connected to your partner.
When partners fuse identities, it may initially feel close, but it often leads to anxiety and reactivity.
Differentiation allows each person to stay grounded even when conflict arises, creating emotional safety rather than dependency.
Self-Connection Strengthens Sexual Connection
Sex therapist and researcher Dr. Emily Nagoski, author of Come As You Are, highlights that sexual well-being is deeply tied to self-knowledge and body attunement.
When you are connected to your own desires, emotions, and limits, you can engage sexually from a place of authenticity rather than a place of obligation or fear of rejection.
This means knowing who you are sexually and emotionally actually makes you more available for genuine connection, not less.
Separate Identities Prevent Emotional Fusion
Therapist Terrence Real, founder of Relational Life Therapy, emphasizes the importance of partners having “a relationship between two strong adults,” not one based on compliance or emotional caretaking.
When one partner consistently suppresses their needs to maintain harmony, resentment builds.
A clear sense of self helps both people contribute to the relationship from a balanced, adult stance rather than a child–parent dynamic that purity culture often normalizes.
Personal Growth Keeps Relationships Alive
Psychologist Harriet Lerner, author of The Dance of Intimacy, explains that healthy relationships allow room for growth, curiosity, and change.
When each partner pursues individual development, whether through friendships, creativity, or learning, it brings new energy and vitality to the partnership.
You keep discovering and rediscovering each other, rather than repeating the same patterns born out of fear or dependency.
Boundaries Foster Trust and Emotional Intimacy
Maintaining individuality also strengthens trust.
According to the Gottman Institute’s research, partners who respect each other’s boundaries report higher satisfaction and lower conflict.
Trust is built when each person feels free to say “no,” express needs, and still be met with respect and care.
This type of safety makes vulnerability possible, which is the foundation of intimacy.
Reclaiming Yourself Is the Path to Real Intimacy
Recovering from purity culture means releasing the internalized belief that closeness requires losing yourself.
Healthy intimacy is never about “two becoming one.” It’s about two whole people, standing side by side, choosing to know and be known.
Choosing to stay curious.
Choosing to stay connected while remaining true to themselves.
If you’re rebuilding your sense of self after years of being told to merge with a partner, know that this process is intimacy.
You’re learning how to belong to yourself first, which means that any relationship you enter is more likely to be rooted in respect, freedom, and mutual desire.