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7 Reasons Why You Can Never Truly Be Friends With Your Ex, According to Psychologists

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The Breakup That Didn’t Feel Finished

When my breakup happened, it wasn’t a slow burn or a mutual drift. It was a snap. One minute I was hearing “I love you,” and the next—it was done. No warning. No closure. I walked away not only losing a boyfriend, but losing my best friend, my secret-keeper, my partner in crime, the person I imagined forever with.

And like many women, I thought: Maybe we can stay friends. Maybe it doesn’t have to be all or nothing. Maybe if we stay connected, it won’t hurt as much.

But it didn’t work that way.

Instead, I spiraled. Checking what he was doing. Wondering if he was dating someone. Feeling the urge to “accidentally” run into him. The dreams, the overthinking, the confusion—it was emotional torture.

A psychologist once told me, “You can stay friends with your ex… but only if you’re both healed, detached, and have no invisible strings left. "We dug into what that meant—and everything changed.

Science, mental-health experts, and relationship researchers overwhelmingly point to the same truth:

👉 Staying friends with your ex often prevents healing, prolongs emotional attachment, and creates psychological confusion.

Here are the 7 reasons why you can’t be friends with your ex—if you care about your sanity, healing, and future.

1. The Emotional Attachment Doesn’t Just “Turn Off”

Even if the relationship ended logically, the emotional bond remains biological.

According to research published in the Journal of Neurophysiology, romantic attachment activates the same brain regions as addiction withdrawal. Source: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3181838/

Meaning: Seeing your ex, texting them, or staying involved keeps your brain addicted—retriggering the attachment high.

You think you’re being mature. You think you’re “being adults. "But your brain is actually spiraling:

  • Why didn’t it work?

  • Do they still love me?

  • Are they seeing someone new?

  • Did I make the right decision?

Remaining “friends” doesn’t neutralize the bond. It keeps the wound open.

2. Friendship Keeps You in a Constant State of Comparison

You can’t help it. You compare.

  • Who are they texting now?

  • Are they happier without you?

  • Are they posting more?

  • Do they look better?

A study in Personal Relationships found that people who remain in contact with an ex report lower emotional recovery, lower self-esteem, and higher anxiety. Source: https://onlinelibrary.wiley.com/journal/14756811

Why?

Because you're no longer their priority… but you still care like you are. That psychological imbalance destroys emotional stability.

Friendship becomes a slow drip of painful updates that you never asked for, but can’t help consuming.

3. Staying Friends Blocks You From New Love

You can claim you “don’t care” or “don’t like them anymore,” but emotionally you’re still tethered.

Psychologists call this attachment residue—emotional traces left from intimacy.

And here’s what it does:

  • Makes you compare new partners to your ex

  • Makes you emotionally unavailable

  • Makes dating feel exhausting

  • Makes you guarded or anxious

  • Makes you feel like “no one measures up”

New relationships can’t grow if you’re emotionally half-invested in an old one.

As therapist Lindsay Gibson, PsyD, states: "You cannot step fully into your next chapter while you’re still rereading the last one. "Source: https://www.psychologytoday.com/

4. One of You Almost Always Wants More

Even in the healthiest breakup, one person usually holds onto a hidden agenda—even subconsciously.

Psychologists call this asymmetric emotional investment.

Meaning:

  • One person wants friendship

  • One person wants reconciliation

  • One person pretends they’re fine

  • One person is still hurting

  • One person waits for a sign

These mismatched intentions create:

  • tension

  • miscommunication

  • jealousy

  • confusion

  • false hope

Friendship becomes the emotional equivalent of holding a door halfway open.

Someone always ends up getting hurt.

5. It Creates a Delayed Grief Cycle

Breakups require grieving—just like a death. But you cannot grieve what you’re still holding onto.

The American Psychological Association states that emotional healing requires disconnection, boundaries, and space. Source: https://www.apa.org/

By staying friends, you never truly:

  • process the loss

  • rebuild identity

  • regain emotional independence

  • reset your nervous system

Instead, your healing is fragmented.

You heal half the wound, bump into them, and reopen it. You feel better for a week, then an inside joke triggers you.

You never get to move forward—only in circles.

6. It Confuses Your Future Relationships

Imagine telling a new partner:

“Oh, don’t worry, my ex and I are just friends.”

No matter how mature the person is, the emotional threat is real.

A study in the journal Evolutionary Psychology found that 72% of participants felt insecure or threatened by an ex-friendly partner. Source: https://journals.sagepub.com/home/evp

Because deep down, everyone knows:

Connections built on romance rarely shift safely into friendship.

You’re not doing it maliciously. You’re not intending to cause harm. But keeping your ex in your orbit sends the message:

“I’m not fully done there.”

And your new partner will feel it. Because it is true.

7. The Version of Friendship You Miss Isn’t Real Anymore

This one hurts the most.

The friend you miss…the banter you loved…the little rituals, the comfort, the closeness—

those existed because you were in a relationship.

Post-breakup, everything changes:

  • They’re not your safe person

  • They no longer prioritize you

  • The emotional intimacy disappears

  • The loyalty shifts

  • The tenderness fades

  • You no longer get their best self

You're holding onto a ghost of a memory, not the reality.

Your brain clings to what was, not what is.

Therapist Esther Perel says: "We don’t miss the person. We miss the story. "Source: https://www.estherperel.com/

You can’t be friends with someone you’re grieving. You can’t be friends with someone you’re trying to detach from. You can’t be friends with someone who once held your heart.

Not without losing yourself.


Healing Starts the Moment You Let Go

It took me months—and a therapist—to understand that wanting to stay friends wasn’t about maturity, logic, or love.

It was about fear.

Fear of loneliness. Fear of losing connection. Fear of what the future looks like without them in it.

But the truth is:

Letting go is closure. Distance is the medicine. Silence is the reset you desperately need.

I stopped checking his socials. Stopped hoping. Stopped texting. Stopped reaching out.

And the peace I found after detaching was something I couldn’t feel when I was still holding onto the fantasy of friendship.

You can care about someone and still walk away. You can love someone and still choose yourself.

And sometimes, the most loving choice you can make…

is to finally let the story end.


Love Arlyn

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