On a recent podcast, Dr. Orna Guralnik, the psychoanalyst many viewers know simply as “Dr. Orna” from Showtime’s Couples Therapy, was asked what she has learned about love after years of sitting with couples. Earlier in her career, she said, she believed compatibility was one of the greatest predictors of success. Find the person who fits you well enough, and the relationship has a better chance.
But now, after listening to hundreds of couples wrestle with money, sex, family, ambition, loyalty, fear and disappointment, she sees something deeper:
The capacity to love someone who is different from you may be one of the greatest forms of love.
That idea feels almost countercultural in a dating world obsessed with “finding your match.” Apps ask us to filter for height, politics, religion, hobbies, education, diet, drinking habits and whether someone wants dogs, children or pickleball. Compatibility matters, of course. Shared values can steady a marriage. A sweeping 2023 meta-analysis in Nature Human Behaviour found that romantic partners are more often similar than different across many traits, especially education, religion, politics and substance use.
But similarity is not the same thing as love.
Similarity may help us choose each other. It does not guarantee we will know how to cherish each other.
A 2020 study in Proceedings of the National Academy of Sciences analyzed 43 longitudinal couple datasets from more than 11,000 couples. The strongest predictors of relationship quality were not basic demographic similarities or personality matching. They were relationship-specific experiences: perceived partner commitment, appreciation, sexual satisfaction, perceived partner satisfaction and conflict. In other words, what matters most is not simply whether we found someone compatible, but what kind of relationship we are building once we are together.
This is where Dr. Orna’s wisdom lands. Every marriage eventually introduces us to the “otherness” of the person we love. Your spouse may handle stress differently. Spend money differently. Need closeness at a different time of day than you do. Grieve differently. Parent differently. Rest differently. Change differently.
At first, those differences can feel like betrayal. “I thought we were on the same page,” we say, when often what we mean is, “I thought you would keep being the version of yourself that was easiest for me to love.”
But marriage is not a lifelong compatibility test. It is a lifelong invitation to mature.
Healthy love does not mean pretending differences are insignificant. Some differences are serious and require counseling, boundaries, repair or even safety planning. But many everyday differences are not signs that we married the wrong person. They are opportunities to practice curiosity instead of control.
Research on partner acceptance supports this. Studies show that feeling accepted by your partner is associated with greater relationship satisfaction. Likewise, perceived partner responsiveness (feeling understood, validated and cared for) is repeatedly linked to intimacy and relationship well-being.
That is a different vision of marriage than “we never fight” or “we like all the same things.” Dr. Orna has said a strong couple creates an atmosphere of mutual respect, adoration and acceptance. She even notes that couples who never argue can be concerning, because it may mean differences are being hidden, swallowed or erased.
Real intimacy is not the absence of difference. It is the courage to remain tender when difference appears.
Maybe the goal is not to marry your mirror image. Maybe the goal is to become the kind of person who can say: I see that you are not me. I will not make you become me in order to love you. I will learn you. I will tell the truth about myself. I will let us grow.
Compatibility may help a couple begin.
But acceptance, appreciation, commitment and the willingness to love across differences may be what helps them last.
Lauren Hall is the President and CEO of First Things First. Contact her at lauren@firstthings.org

