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Relationship expert says this ‘1 quality’ predicts if someone is going to be a good partner

After 20 years as a couples therapist, Jeff says one trait predicts relationship success and it’s not shared interests or communication, but flexibility.

Published on: Jun 10, 2025 02:47 PM IST
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What truly makes someone a great partner? Is it emotional intelligence, physical chemistry, or how well they communicate? While all of these play a role, there's one trait that often outweighs the rest when it comes to long-term compatibility. According to relationship expert Jeff Guenther, this one quality can serve as a powerful predictor of whether someone will make a supportive, reliable partner. (Also read: Sleeping in separate beds as a couple? Relationship expert shares what it really means )

Relationship expert Jeff Guenther emphasises psychological flexibility as a key trait for long-term compatibility in partnerships. (Unsplash)
Relationship expert Jeff Guenther emphasises psychological flexibility as a key trait for long-term compatibility in partnerships. (Unsplash)

On his June 5 Instagram post, Jeff shared, “After 20 years as a couples therapist, I can tell you it's not how well they talk about their feelings, it's not shared interests, and it's definitely not whether they've been to therapy (although that doesn't hurt).”

What really makes a relationship work?

Jeff elaborated, "You can shift perspectives instead of clinging to being right. You can stay present during conflict instead of shutting down or spiralling. And you can act in alignment with your values even when your nervous system is lighting up like a pinball machine."

Citing research, he added, "According to a massive review of over 170 studies involving 44,000 people, psychological flexibility is one of the strongest predictors of relationship success."

How to build psychological flexibility

Wondering what to do if you or your partner struggles with this? Jeff recommends: “It's a skill” and here's where to start:

  • Practise pausing instead of reacting.
  • Try saying, 'Here's what I'm feeling right now,' before launching into blame.
  • Ask yourself mid-conflict, 'What would the connected version of me do right now?' and remind yourself that you don't have to win, you just have to understand.

"To be clear, psychological flexibility isn't just emotional intelligence. It's your ability to adapt when emotions get loud, to stay open, grounded, and value-driven even when things feel messy. It's being able to pivot without disconnecting from who you are or what really matters. Because being a good partner isn't about being perfect, it's about being flexible enough to love and be loved through the hard stuff," Jeff concludes.

Here's the clinical research Jeff referred to: https://www.rochester.edu/newscenter/psychological-flexibility-romantic-familial-relationships-462812/

 
ABOUT THE AUTHOR
Akanksha Agnihotri

Akanksha Agnihotri is a lifestyle journalist with over 3 years of experience. She is a psychology graduate and holds a postgraduate diploma in Radio and Television Journalism from the Indian Institute of Mass Communication, Delhi, where she graduated as a gold medalist. Originally from Bhopal, the beautiful capital of Madhya Pradesh, she draws inspiration from the city’s rich cultural heritage and layered storytelling traditions that subtly shape her narrative voice. She writes extensively about fashion, beauty, health, relationships, culture, and food, exploring everything from trending styles and runway moments to wellness routines and mindful living. Passionate about meaningful and candid conversations, she enjoys interviewing celebrities, doctors, designers, and film personalities, diving into discussions on fitness, beauty, mental health, and everything fun in between. With a keen eye for trends and a thoughtful understanding of human behaviour, she brings depth, sensitivity, and authenticity to her stories, ensuring they resonate with a wide and diverse audience. When she’s not working, you’ll usually find her lost in a book, planning her next mountain trek, or mapping out spontaneous travel escapes. She loves discovering new authors, revisiting old favourites, and spending quiet afternoons in museums soaking in art, history, and culture. An avid bird-watching enthusiast, she finds joy in early morning walks, spotting rare birds, and reconnecting with nature. Whether sipping coffee while journaling her thoughts or exploring hidden corners of a new city, she constantly seeks inspiration in everyday moments that often turn into compelling story ideas.

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Catch your daily dose of Fashion, Taylor Swift, Health, Festivals, Travel, Relationship, Recipe and all the other Latest Lifestyle News on Hindustan Times Website and APPs.
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