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If you’re thinking seriously about marriage, moving in together, or building a future with someone, there’s one quality you should be looking for before you commit.
It has nothing to do with appearance.
It isn’t about income, education, or shared hobbies.
In my experience, after coaching thousands of men and women struggling with retroactive jealousy since 2013, this one characteristic predicts whether a relationship can survive life’s inevitable challenges.
And surprisingly, very few people talk about it.
Watch the video below for the full discussion:
Before You Commit, Look Beyond Attraction
For those new to my work, retroactive jealousy refers to unwanted intrusive thoughts, obsessive curiosity, and what I call mental movies about a partner’s past relationships and/or sexual history.
Because of my coaching work, I spend a great deal of time discussing dating, relationships, and what I call vetting—how to choose the right long-term partner.
Many people obsess over finding red flags.
Others spend all their energy searching for the perfect person.
But before you commit, there’s one green flag that deserves far more attention.
Can You Negotiate With This Person?
The question is simple:
Can you negotiate with them?
By negotiation, I don’t mean manipulation or keeping score.
I mean asking yourself:
- Can you disagree without everything becoming a crisis?
- Can they admit when they’re wrong?
- Can they compromise?
- Can you solve problems together?
- Are they willing to hear your perspective?
A healthy long-term relationship requires two people who can occasionally give ground in order to preserve something bigger than their own ego.
If someone must always win every disagreement, that’s a serious concern.
Small Conflicts Predict Bigger Ones
One lesson I’ve learned from coaching clients around the world is this:
If you can’t negotiate about the little things, you probably won’t negotiate well about the big things.
Maybe it’s something as simple as:
- How household chores are divided
- How money is spent
- How weekends are planned
- Where to spend holidays
If every small disagreement turns into stubbornness, pouting, or emotional warfare, imagine what happens when the stakes become much higher.
Questions about children.
Where to live.
Career sacrifices.
Finances.
Family boundaries.
These decisions require mature negotiation—not two people locked in a battle to prove who’s right.
Why This Matters Before You Commit
Over the years, countless coaching clients have shared painful stories about committing to someone they simply couldn’t negotiate with.
Looking back, they often realize the warning signs were there from the beginning.
The problem wasn’t one catastrophic event.
It was years of unresolved conflict because one person refused to compromise.
That’s why I believe this is one of the most overlooked green flags to look for before you commit.
Jordan Peterson’s Advice on Relationships
One idea from psychologist Jordan Peterson has always resonated with me.
He argues that successful long-term couples learn to negotiate almost everything.
From where the kitchen utensils go…
…to where they want to raise children.
…to how they’ll handle finances.
The healthiest couples don’t rely on assumptions.
They communicate openly.
They negotiate.
They look for solutions instead of victories.
That doesn’t mean you’ll always agree.
It means both people are committed to solving problems together.
Being Reasonable Is an Underrated Green Flag
No one is perfect.
Everyone has blind spots.
Everyone gets emotional sometimes.
But one of the greatest gifts a partner can offer is simply being reasonable.
Reasonable people can have difficult conversations.
They can change their minds.
They can listen.
They don’t need every disagreement to become a personal battle.
Those qualities become invaluable over decades together.
Final Thoughts Before You Commit
If you’re considering taking the next step in your relationship, don’t just ask yourself whether you love this person.
Ask yourself something equally important:
Can we negotiate?
Can we solve problems together?
Can we compromise without resentment?
Can we communicate honestly when life gets difficult?
If the answer is yes, you’ve found one of the strongest foundations for a lasting relationship.
If the answer is consistently no, it’s worth paying attention before you commit.
If you’re struggling with retroactive jealousy and want help gaining clarity about your relationship, learn more about my one-on-one coaching.


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