It’s easy to believe that a great marriage is simply the result of finding the right person—someone who shares your values, makes you laugh, and feels like home. But the truth is far more interesting and hopeful: the secret to a happier, longer-lasting relationship may have much more to do with how you treat each other over time than with the initial spark of chemistry or compatibility. New research published in the journal Family Process found that when couples improve their communication and create emotional safety, their overall relationship satisfaction rises significantly. That kind of connection doesn’t just happen and then stay forever; it takes ongoing effort, especially once life settles into routines and you start feeling like you already know everything about your partner. Tammy Nelson, Ph.D., a board-certified sexologist and integrative relationship therapist in Los Angeles, points out that compatibility is not a fixed thing. It can feel different to the same people at different times, because relationships go through developmental stages just like individuals do. You are not the same person you were five years ago, and neither is your partner. The danger is when you stop paying attention to that growth. Nelson identifies five common mistakes that quietly weaken a couple’s connection—and each one has a remedy that brings you back to curiosity, courage, and genuine presence. These are not dramatic betrayals or explosive fights; they are the small, everyday ways we stop seeing each other. The good news is, you can start reversing them today.
The first mistake is assuming you know everything about your partner. Think back to when you first fell in love. So much of that dizzying attraction came from curiosity—someone was fascinated by you, wanted to know your thoughts, your memories, your dreams. That feeling of being truly seen and explored is intoxicating. But after years of shared meals, routines, and quiet nights on the couch, it’s natural to feel like there’s nothing new to discover. Nelson warns that this loss of curiosity chips away at attraction over time. We are drawn to the space between us, not just the familiar person sitting next to us every night. And people change. The partner who used to love spicy food, action movies, or certain kinds of touch may have different preferences now. Yet if you’ve put them in a box—assuming you know what they’ll order, what they’ll say, what they’ll want in bed—you stop asking the questions that keep a relationship alive. Nelson urges couples to stay curious: “Don’t put your partner in a box. Who are they becoming? What are they thinking? What do they desire? What’s their vision for the future?” This is not just about romance; it’s about respect. When you stop being curious, the attention of someone outside the relationship can suddenly feel dangerously appealing. Why? Because a new person asks questions and is fascinated by you. That’s the same reason we pay therapists—so someone will ask us about ourselves. If you can learn to turn that fascinated attention back to your partner, you create the kind of environment where love can keep growing instead of slowly suffocating.
The second mistake is avoiding difficult conversations. Many couples pride themselves on never fighting, but Nelson cautions that what you don’t talk about can become the biggest obstacle to intimacy. “Pay attention to what you’re not talking about and why,” she advises. When there is tension about money, sex, in-laws, or the future, it’s tempting to let it slide to keep the peace. But sweeping issues under the rug doesn’t make them disappear; it creates a silent wall between you. Research consistently shows that couples who openly disagree, argue, and then communicate through the conflict are often more resilient than those who avoid all confrontation. Nelson puts it bluntly: “It’s not the people who fight and communicate all the time. It’s the people who aren’t fighting, aren’t arguing, aren’t communicating.” If you notice that you pull back or shut down when certain topics come up, that’s a clue that there’s important territory waiting to be explored. Maybe you avoid talking about money because you’re afraid of sounding controlling, or you avoid sex because you’re worried about rejection. Nelson encourages couples to lean into those uncomfortable spaces. It’s legitimate to be scared of conflict—no one wants to feel attacked or to hurt someone they love—but there is room for communication without blame. Start by naming the pattern: “I notice we never talk about this, and I think it’s because we both want to protect our relationship. What if we try to talk about it differently?” That small shift can turn a dangerous silence into a doorway to deeper trust.
The third mistake is focusing on what’s wrong with your sex life. When couples finally work up the courage to talk about intimacy, the conversation often becomes a list of complaints: you’re not initiating enough, you’re not doing what I like, we’re not having sex as often as we used to. Nelson says this approach backfires because it puts your partner on the defensive and makes both of you feel bad. Criticism is not sexy. It creates tension, withdrawal, and even more distance. Instead, she offers what she calls the “magic formula”: share what you appreciate and what is working. “The key to the universe is you get more of what you would appreciate,” she says. If you point out how your partner is not acting the way you want, you fall into conflict and defensiveness. But if you say, “I love the way you kissed me last night,” or “I still think about that time we spent the whole afternoon in bed,” your partner hears that they are already giving you something good. That makes them feel competent, desired, and more willing to do more of it. Nelson recommends starting with something you genuinely appreciate about your sex life, whether it’s happening now or happened years ago, and then expanding from there: “I love when we do X—can we do more of that?” This doesn’t mean ignoring real problems, but it means building on positive experiences rather than tearing down the negative. Over time, this approach creates a cycle of appreciation and generosity rather than a cycle of criticism and shutdown.
The fourth mistake is getting stuck in “maintenance mode.” Every long-term relationship requires a certain amount of logistics: paying bills, planning meals, fixing the air conditioner, managing schedules. Nelson calls this maintenance mode, and it’s essential. You can’t ignore reality. But if all your energy goes into maintaining the machine of daily life and none goes into expansion, your relationship starts to feel like a chore. Expansion mode is about trying new things together, having new experiences, and keeping a sense of adventure and possibility alive. It might mean signing up for a dance class, planning a weekend trip somewhere you’ve never been, or simply asking each other the kind of big, playful questions you used to ask on early dates. Nelson warns that too much maintenance leads to boredom and feeling stuck—you’re comfortable, but you’ve lost that electric sense of aliveness. On the other hand, too much expansion can leave you feeling like you’re always in motion, with no rest or grounding. The goal is a balance. “All relationships need freedom and connection,” she says. Freedom to grow, explore, and be surprised by each other, and connection that anchors you to shared history and trust. If you feel like you’re just going through the motions, schedule something new. It doesn’t have to be expensive or dramatic; even a different restaurant, a hike in an unfamiliar trail, or a night where you both learn something new together can shift the energy. The key is to remember that the relationship is a living thing, not just a household to be managed. It needs air, light, and new soil to keep blooming.
The fifth mistake is keeping your feelings of connection to yourself. Many people feel love, tenderness, and affection for their partner but never say it out loud—or even allow themselves to fully feel it. Nelson encourages couples to notice the positive emotions and physical sensations that arise when they think about their partner. Maybe it’s a warm feeling in your chest, a softness in your belly, or a sudden smile. “Where in your heart or in your body are you feeling the most ‘juice,’ the most ‘aliveness,’ when you think about your partner?” she asks. Some people are naturally more aware of these bodily sensations than others, but everyone can learn to tune in. Once you notice that warm feeling, share it. It can be as simple as placing your hand over your heart and saying, “You know, when I think about you, I get this warm feeling in my heart.” That might sound small, but for your partner, it means everything. It shows that you are not just going through the motions; you are actually feeling something real. It creates a moment of true connection in the middle of an ordinary day. Nelson also notes that we often miss opportunities for closeness because we assume our partner knows how we feel. But love needs to be spoken and shown, not just assumed. When you share your internal experience—your tenderness, your appreciation, your desire—you invite your partner into your inner world. That vulnerability is the opposite of taking each other for granted. It’s a way of saying, “I see you, and I’m still moved by you.” Over time, these small, honest offerings build a bridge that makes a relationship feel safe, alive, and deeply satisfying.
Ultimately, Nelson’s advice points to a simple but profound truth: a happy marriage is not a destination you arrive at, but a living practice. It requires ongoing attention, curiosity, and a willingness to keep discovering new things about each other—not just in the early stages of falling in love, but through every stage of life. The five mistakes she outlines are common, but they are not destiny. You can choose to stay curious instead of assuming you know everything. You can choose to lean into difficult conversations instead of avoiding them. You can choose to focus on what is working in your sex life rather than what is missing. You can choose to balance maintenance with expansion, responsibility with adventure. And you can choose to share the warmth in your heart instead of keeping it to yourself. None of these choices require a dramatic overhaul of your relationship. They require only a shift in attention. When you pay attention to your partner—to the person they are becoming, the fears they are carrying, the desires they have not yet voiced—you create emotional safety. And emotional safety is the foundation upon which desire, trust, and enduring love are built. So if you feel like your relationship has lost something over the years, take heart. It can be found again, not by chasing a perfect partner, but by being curious, brave, and present with the partner you already have. That is the real secret, and it’s available to you starting today.
