The Most Common Complaint About In-Laws: Insight From a Couples Therapist
The car ride home is quiet. Not the good kind. Something was said at dinner — or not said — and now you're both staring at the road, trying to figure out how to bring it up without starting another argument. If you've been working with a St Louis couples therapist, or considering it, in-law tension is probably part of the picture. It comes up constantly in couples therapy — not because the relationship is failing, but because navigating another family's dynamics is genuinely hard, and that difficulty has a way of landing between partners even when they love each other. This post draws on research and couples therapy insight to explain what drives the most common in-law complaints, why they affect the couple relationship so directly, and what actually helps.
Why In-Law Relationships Are So Complicated by Design
In-law relationships are structurally different from almost every other relationship in your life. That difference is part of why they're so hard. Professor Gretchen Perry at the University of Canterbury notes that in-law relationships have no rulebook. There are no clear norms about how close you should live, how often you visit, or what role you're supposed to play. While couples may have friction with their own families, they're more likely to share common values and a frame of reference with the people they grew up with.
With In-Laws, that Overlap Isn't Guaranteed.
Research from Purdue University found that most couples go into marriage expecting positive in-law relationships. That expectation matters, because when tension does show up, it can feel like a personal failure rather than what it often is: a structural one. In-law relationships are involuntary, begin in adulthood, and are mediated entirely through a third party. That combination creates real complexity before a single word has been exchanged.
The Most Common In-Law Complaints — and What They're Really About
The complaints couples bring into therapy about in-laws tend to cluster around a few recurring themes: feeling criticized, feeling like an outsider, disagreements about time and holidays, and conflict over parenting. A 2016 survey found that among couples who argue with their in-laws, 29% cited parenting style as the main source of tension. Politics came in at 15%, money at 14%, and career pressure at 4%. These aren't random friction points. They're the areas where two family systems with different values collide.
Child-rearing is one of the most charged flashpoints, especially in the early years. A Finnish study found that young adults were more likely to report in-law conflict after the birth of their first child. A grandchild creates new opportunities for influence and involvement, and with that comes more room for disagreement about how things should be done. Holidays are another predictable pressure point. When both families expect to be the priority and traditions don't align, tension follows.
Why the Holidays Make Everything Harder
Researcher Melanie Booth-Butterfield describes a phenomenon called "hypercopresence" — what happens when forced closeness during gatherings produces conflict, sharp words, and cold nonverbal behavior that leave lasting impressions long after the holiday is over. Most people can think of an example without trying. The deeper truth underneath all of these complaints is the same. Most in-law conflict isn't really about the in-laws. It's about two people trying to build a shared life while still belonging to the families they came from.
Why It Affects Your Relationship With Your Partner
In-law conflict doesn't stay between you and your in-laws. It almost always finds its way into the couple relationship. Research published in Research in Human Development by Fiori, Rauer, Birditt, Brown, and Orbuch followed 355 couples over 16 years and found that relationships with in-laws are consistently among couples' biggest sources of conflict. Acrimonious in-law relationships were found to undermine the marital relationship directly.
What the study found next is worth sitting with. It wasn't the actual quality of the in-law relationship that most predicted divorce risk. It was whether both partners saw that relationship the same way. Couples who disagreed about how close the husband was to the wife's family faced a significantly higher risk of divorce over 16 years. Among couples where the wife felt the husband wasn't close to her family but he believed he was, the divorce rate was 72%.
When You're Not Even Arguing About the Same Thing
In plain terms: when partners aren't on the same page about family, the gap between their perceptions becomes its own source of conflict. One partner may feel their family is being dismissed. The other may feel accused of something they don't recognize. That disconnection is often where the real damage happens, and it can build quietly over years before either person names it.
The Trap Couples Fall Into
The most common mistake couples make with in-law conflict is letting it become a battle between them instead of something they face together. The first step in navigating in-law tension is talking to your partner directly. Not to vent to your own parents. Not to handle it alone. Not to vent to your own parents. Not to handle it alone.
When a partner feels caught between their family of origin and their spouse, they often land in one of two positions. Either defending their family to avoid conflict, or distancing from their family to prove loyalty. Both create new problems. The partner whose family is being defended feels unheard. The partner whose family is being distanced from may carry guilt or resentment that surfaces later.
The Goal Isn't to Win. It's to Face It Together.
One longitudinal study makes a point worth returning to: when spouses have good communication and are genuinely on the same side, even painful family-of-origin issues can bring them closer rather than pull them apart. The goal isn't for one partner to win the in-law argument. It's for both partners to feel like they're facing it together.
What Actually Helps
The strategies that work in in-law conflict aren't about fixing the in-laws. They're about strengthening the couple. A few approaches come up consistently. The first is the boundary conversation. Couples who talk explicitly about expectations around family tend to handle in-law tension better than those who leave those expectations unspoken. That means naming how often you visit, which topics are off-limits, and how holidays get divided. Unspoken expectations become resentments. Naming them, even awkwardly, gives both partners something to work from.
The second is ownership. Each partner is generally better positioned to manage their own family of origin. When a husband has a concern about his mother's behavior, he raises it with his mother. When a wife needs something to change, she addresses it with her family. The partner-as-messenger dynamic tends to make things worse. It puts one person in an impossible position and gives the other a way to avoid a harder conversation.
A Third Angle is Autonomy.
Couples who can operate with some independence, choosing when and how to engage with extended family rather than feeling beholden to it, experience less conflict. That doesn't mean cutting people off. It means building a couple relationship that doesn't require constant family approval to function.
Acceptance is also a long-term strategy worth considering. In-laws are unlikely to change in fundamental ways, and building a workable relationship within that reality is often more sustainable than waiting for the dynamic to shift on its own. Some of the work is internal. Deciding what you're willing to carry and what you need to let go of is part of what makes navigating extended family feel less exhausting over time.
When In-Law Conflict Becomes a Couple Problem
In-law tension crosses a line when it starts driving a wedge between partners. When family arguments turn into arguments with each other. When one partner consistently feels unsupported or unheard. When the same holiday or the same visit triggers the same fight every single time. This is one of the most common presenting issues in couples therapy in St. Louis, and it's also one of the most workable.
A couples counselor helps partners get on the same page about family, develop a shared approach to in-law dynamics, and rebuild connection when the friction has been building for a while. Many couples don't wait until things feel serious. They come to therapy because they want to understand the pattern before it becomes entrenched, and because having someone in the room who can hold both perspectives makes the conversation possible in a way it hasn't been at home.
Is In-Law Conflict Affecting Your Relationship? Couples Therapy in St. Louis Can Help.
If you and your partner keep getting stuck on the same family tensions, you don't have to keep navigating it alone. At SEO and Wellness, our St Louis couples therapists help partners build a shared approach to family dynamics, so the people you love most don't become the wedge between you.
Learn how to face family dynamics as a team
Other Services Offered at SEO and Wellness in St. Louis, MO
At SEO and Wellness, we know your relationship is only one part of your overall well-being. That's why our care goes beyond couples therapy to support every part of who you are. Stress, health, identity, and family dynamics all shape the way we show up in our relationships, and we believe the best care sees that whole picture.
In addition to couples counseling, our team provides individual therapy, family therapy, psychiatry, functional medicine, chiropractic care, acupuncture, speech therapy, and occupational therapy. Every service is grounded in the same belief: that care should be comprehensive, inclusive, and connected. Whether you're working through anxiety, rebuilding your health, or strengthening your relationships, you'll find a warm, affirming space here where lasting change can take root.
About the Author
Dr. Maya Johnson, PsyD, has spent years helping couples navigate one of the most underestimated sources of relationship strain: the families they came from. As the Founder and Clinical Director of SEO and Wellness and a licensed couples counselor in St. Louis, MO, she works with partners who love each other deeply and still find themselves caught between competing loyalties, unspoken expectations, and family dynamics that neither of them chose. Her work is grounded in the belief that a strong couple relationship isn't built in isolation. It's built in the middle of real life, which includes family.
Dr. Johnson is a Licensed Psychologist in Missouri with a PsyD in Clinical Psychology. She brings a trauma-informed, culturally responsive approach to every session, and her practice is rooted in a HAES-aligned, LGBTQIA+ affirming perspective. She knows that family-of-origin dynamics don't disappear when you close the door after a holiday. They follow couples into the car, into the kitchen, and into the quiet moments where things go unsaid.
When she's not in session, you'll find her cooking family recipes with her teenage daughter or out on one of Missouri's many hiking trails.
Sources
Carnegie, M. (2022, November 21). The tensions that fan tricky in-law relationships. BBC Worklife. https://www.bbc.com/worklife/article/20221111-the-tensions-that-fan-tricky-in-law-relationships
Cuncic, A. (2026, May 29). What to do if you don't like your in-laws. Verywell Mind. https://www.verywellmind.com/what-to-do-if-you-dont-like-your-in-laws-5221304
Fiori, K. L., Rauer, A. J., Birditt, K. S., Brown, E., & Orbuch, T. L. (2021). You aren't as close to my family as you think: Discordant perceptions about in-laws and risk of divorce. Research in Human Development, 17(4), 258-273. https://pmc.ncbi.nlm.nih.gov/articles/PMC8133523/
