The secret to a happier, longer-lasting marriage may involve much more than chemistry and compatibility.
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secret → last → chemistry
Recent research published in the journal Family Process found that improvements in communication and emotional safety were linked to greater relationship satisfaction.
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improvements → publish → satisfaction
Maintaining that connection takes effort, particularly as couples settle into routines and begin to feel as though they already know everything about each other, according to Tammy Nelson, Ph.D., a board-certified sexologist, sex therapist and integrative relationship therapist in Los Angeles.
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they → maintain → Angeles
"Compatibility can feel different to different people at different times," she told Fox News Digital.
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she → feel → Digital
"The relationship will go through developmental stages just like you do."
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you → go → stages
From losing curiosity to avoiding difficult conversations, Nelson shared five common mistakes that can weaken a couple’s connection — and ways to avoid them.
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that → lose → them
No. 1: Assuming you know everything about your partner
Losing curiosity about a partner can chip away at attraction over time, according to Nelson.
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Losing → assume → Nelson
"That’s how we fall in love, when someone's curious about us," she said. "When they come along and say, 'I'm so interested in you.
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I → ’ → you
"We're attracted to something in the space in between us — not so much when it's sitting next to us on the couch every night, and so we tend to lose that curiosity.
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we → attract → curiosity
While someone may feel they know everything about their partner — "what they like to eat, what they'd like to watch on TV, what they might like in bed" — those preferences can evolve over time, Nelson said.
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Nelson → feel → time
"Don't put your partner in a box," Nelson said, urging couples to stay curious and ask questions.
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Nelson → put → questions
"Who are they becoming?
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they → become → ?
What are they thinking?
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they → think → What
What do they desire?
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they → desire → What
The therapist suggested that losing curiosity about a partner can sometimes make attention from someone outside the relationship particularly appealing.
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attention → suggest → relationship
"That's why we have affairs, right?
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we → have → affairs
Somebody comes along and they're fascinated by us," she said.
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she → come → us
"We love that.
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We → love → that
And it's why we pay a therapist, so someone will ask questions about us.
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someone → pay → us
"
No. 2: Avoiding difficult conversations
Avoiding difficult conversations — and failing to pay attention to what goes unsaid — can create problems in a relationship, Nelson cautioned.
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Nelson → avoid → relationship
"Pay attention to what you're not talking about and why," she advised.
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she → pay → what
When it comes to relationship problems, couples who avoid conflict may be more vulnerable than those who openly disagree.
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who → come → those
"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," the expert said.
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expert → fight → ?
Nelson encouraged couples to notice which topics make them pull back or shut down during conflict — such as money or sex — and instead make an effort to lean into those difficult discussions.
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them → encourage → discussions
"You're probably avoiding it because you don't want to get into a conflict, which is totally legitimate, but maybe pay attention to those spaces where there could be more room for communicating," she advised.
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she → avoid → spaces
No. 3: Focusing on what’s wrong with your sex life
When couples talk about sex, focusing on complaints rather than what is working can make intimacy more difficult, according to Nelson.
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intimacy → focus → Nelson
"The key here is not to talk about what's not working or what your partner's not doing, or why you’re not doing it more often," she said.
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she → talk → it
The "magic formula," Nelson said, is for partners to share what they like and what is working.
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what → say → what
"The key to the universe is, you get more of what you would appreciate," she said.
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she → get → what
"If you point out how your partner is not acting the way you want, then you're in conflict, you're defensive, you feel bad about yourself.
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you → point → yourself
That's not going to help, it’s not very sexy."
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it → go → ?
"Expand on what’s already working."
Instead, she recommends focusing on the positive by telling a partner what they've liked about their sex life, whether it is something happening now or a meaningful experience from years ago.
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it → expand → life
"Whether you’re a new couple or you've been together forever, start with something you appreciate, and then something that you would like more of," she suggested.
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she → ’re → more
"Expand on what’s already working."
No. 4: Getting stuck in ‘maintenance mode’
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what → expand → mode
Another potential mistake is allowing the everyday responsibilities of life to crowd out opportunities for growth and excitement.
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responsibilities → allow → growth
Nelson encouraged couples to consider whether their relationship is primarily in "maintenance mode" or "expansion mode."
Maintenance mode involves managing the everyday responsibilities of a shared life, which Nelson said is essential.
"
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Nelson → encourage → life
You know, we need to pay the bills.
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we → know → bills
We need to make sure the air conditioner is working," she said.
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she → need → ?
"We need maintenance in a relationship, just like you need maintenance at a job or just in life, but you also need expansion."
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you → need → expansion
Expansion mode, meanwhile, involves trying new things together and finding ways to keep the relationship exciting.
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mode → involve → relationship
…and 10 more, not listed.