Why Ending a Long Relationship Hurts So Much A US-Based Therapist Explains What's Really Going On

Why do people hold on to relationships that no longer make them happy and why does walking away feel like losing a part of who they are? A viral insight by licensed therapist Jeff Guenther, a Portland-based relationship counsellor in the United States known as “Therapy Jeff,” is sparking intense conversations online for answering exactly this. Drawing from his professional training in counselling and real-life client experiences, Guenther reveals five powerful reasons why ending a long-term relationship can feel like losing a part of yourself. The discussion, reported on April 25, 2026, has struck an emotional nerve, as he explains how deep attachment, shared identity, and the fear of starting over keep people stuck longer than they expect. As more individuals open up about heartbreak and personal growth, this perspective is quickly becoming a must-read for anyone trying to understand why letting go can hurt so deeply, even when it’s the right choice.

It Is Not Weakness. It Is Your Brain.

The first thing any good therapist will tell you is this: the pain of ending a long-term relationship is not a sign that you are weak, irrational, or broken. It is a sign that your brain did exactly what it was designed to do form a deep bond with another person.

Neuroscientists have compared the process of a breakup to physical withdrawal from a substance. When you are in a committed relationship, your brain regularly releases oxytocin, dopamine, and serotonin the same chemicals connected to pleasure, reward, and comfort. Over years, your nervous system learns to expect these signals from one specific person. When that person is no longer there, the brain enters a state that researchers describe as genuine physiological distress. Psychiatrists Thomas Lewis, Fari Amini, and Richard Lannon, authors of A General Theory of Love, describe a relationship as "a physiologic process, as real and as potent as any pill or surgical procedure." The rupture of a long attachment bond, they note, does not just affect how you feel, it disrupts cardiovascular function, hormone levels, and immune response.

This is not a metaphor. Your body actually goes through something when a long relationship ends.

5 Reasons Therapists Say Leaving Feels So Hard

1. You Are Losing More Than Just a Person

After years together, your life becomes shared, habits, plans, even how you see yourself. So when it ends, it feels like a part of you is gone too. It’s not just them, you’re also missing who you were with them.

2. “I’ve Already Invested So Much” Feeling

Many people stay because they’ve already given years, effort, and energy to the relationship. Walking away feels like wasting all of it. So instead of leaving, they keep hoping it will work.

3. Life Is Too Intertwined

From money and home to friends and daily routines, everything gets connected. Leaving doesn’t just mean a breakup, it means untangling your whole life. That alone can feel overwhelming.

4. Fear of Being Alone

A big fear is: “What if I don’t find someone again?” Being alone after years with someone feels unfamiliar and scary. For many, that fear feels worse than staying unhappy.

5. Feelings Don’t Switch Off Quickly

Even after things end, the connection doesn’t disappear overnight. You can still miss them, think about them, and feel attached. Moving on takes time, even when you know it’s the right decision.

What Breakups Really Leave Behind

Ending a long relationship is not just about saying goodbye, it often leaves behind a mix of confusion, heaviness, and unanswered questions. The impact goes beyond missing someone, as daily life, routines, and even thoughts start to feel different. Many people go through similar struggles but rarely talk about them openly, making the experience feel more isolating than it actually is.

What People Commonly Experience

• Sleep and focus issues: It can become hard to sleep properly or stay focused on daily tasks.

• Constant thoughts: Memories, conversations, and “what ifs” keep replaying in the mind.

• Low energy and mood shifts: Some days feel heavy, with sudden waves of sadness or frustration.

Confidence Takes a Hit

After a breakup, many people start questioning themselves and their choices. Thoughts like “Was I not enough?” or “Could I have done better?” can become common. This shift can quietly affect confidence and how a person sees their own worth.

Pulling Away From Others

It’s natural to want space, but many people begin to withdraw from friends and family for too long. While it may feel easier in the moment, this distance can make the situation feel even heavier. Staying connected, even in small ways, can make a difference.

The Loop of Overthinking

After a breakup, the mind often keeps replaying old conversations and moments. People start questioning their decisions and thinking about “what could have been.” This cycle is hard to break and can keep them stuck in the past instead of moving forward.

When You Didn’t See It Coming

If you weren’t the one who ended the relationship, the impact can feel even stronger. There’s often a sense of lost control, along with more confusion and unanswered questions. This can make the process of moving on feel slower and more difficult.

How to Actually Heal, Not Just Survive After Leaving

The good news is that healing from a long relationship is not just possible for many people, it eventually leads to genuine growth. But the path matters. Here is what both therapists and researchers consistently point to.

Understand What You Have Actually Lost

Healing starts with clarity, not distraction. It’s not just about losing a person, but also the version of yourself that existed in the relationship. Recognizing what changed helps you understand what feels missing. This awareness makes it easier to rebuild with intention.

Rebuild Your Identity Step by Step

After a long relationship, many people feel a gap in their sense of self. Instead of rushing into something new, focus on rediscovering your interests and routines. Reconnect with things you once enjoyed or try something different. These small steps help rebuild independence.

Focus on Meaning, Not Just Closure

Closure is not always clear or immediate, and that’s okay. What matters more is understanding what the relationship meant to you. Making sense of the experience can bring clarity and direction. It helps you move forward with fewer doubts.

Create Some Distance

Staying in touch or checking an ex’s updates can make it harder to move on. Creating space, both offline and online, allows you to adjust at your own pace. It helps reduce constant reminders and emotional triggers. Distance supports a smoother transition.

Consider Professional Support

Speaking to a professional can offer clarity during a confusing time. It helps you process thoughts, patterns, and decisions more effectively. You get structured guidance instead of feeling stuck in your own head. For many, it makes the process easier to handle.

Lean on the Right People

Not everyone will understand your experience, and that’s normal. Focus on a small group of people who listen without judgment. Being around the right support system can make you feel more grounded. It reminds you that you’re not going through it alone.

You Will Get Through This, Even If It Does Not Feel That Way Right Now

There is something deeply important buried in all of this research: most people do eventually heal. Not quickly. Not linearly. But genuinely.

Studies have found that individuals can report real positive changes following a breakup, including feeling more self-confident, more independent, stronger, and more emotionally stable,  suggesting that for many, the pain eventually becomes a kind of growth.

The end of a long relationship is one of the hardest things a human being can go through. It is painful not because you failed, but because something that mattered deeply is no longer there. That is not weakness that is proof that what you had was real.

And real things, when they end, take real time to heal from.

If you are struggling after a breakup and finding it difficult to cope on your own, speaking with a qualified therapist or counsellor can make a significant difference. You do not have to process this alone.