Co-Parenting With an Ex Who Refuses to Change: When the Marriage Ends but the Behaviour Doesn't

You've done the work. You've grown, healed and rebuilt your life. But what happens when you still have to raise children with the very person you needed to heal from?

There is something we don't talk about nearly enough when discussing divorce, healing and moving forward.

Sometimes, the person you divorced is still the person you're having to navigate long after the marriage ends.

The same behaviours.

The same lack of accountability.

The same manipulation, blame or emotional immaturity.

The same exhausting conversations that leave you questioning yourself, defending your decisions or wondering how someone can still have so much influence over your life when you're no longer married to them.

And here's the particularly difficult part.

You've changed. But your ex hasn't. And they may never change.

For individuals who share children with a former partner, this can be one of the most challenging realities of life after divorce.

Because leaving a marriage doesn't necessarily mean leaving every dynamic that existed within it.

Why Is Co-Parenting With a Difficult Ex So Emotionally Exhausting?

When a marriage ends, we often imagine that the emotional difficulties associated with the relationship will eventually end too.

And in some respects, they do.

You no longer share a home. You no longer have to negotiate the everyday intimacy of a marriage. You begin establishing your own routines, priorities and identity.

But when you have children together, your lives may remain connected through decisions and responsibilities for years.

Parenting arrangements.

Schooling and education.

Financial contributions.

Medical decisions.

Holidays and special occasions.

Communication about your children's needs.

And sometimes, every one of these ordinary responsibilities becomes another opportunity for the old relationship dynamics to resurface.

A straightforward conversation about school can turn into an argument.

A financial responsibility becomes a dispute.

A simple boundary is interpreted as an attack.

Asking for accountability or honesty is met with the same lies or emotional immaturity.

And suddenly, you find yourself feeling exactly as you did when you were married.

Only now, you're navigating those dynamics as someone's ex rather than their spouse.

That can be incredibly frustrating, particularly when you've invested significant time and energy into trying to move on.

Just Because You've Healed Doesn't Mean Your Ex Has

One of the greatest misconceptions about personal development is that once we've done enough healing, difficult people will somehow stop being difficult.

They won't necessarily.

I see this repeated over and over again in my coaching practice. My clients come to me having grown and healed somewhat (or they're trying to), but still their ex remains the same. Bringing to my clients the same behaviours, patterns and way of behaving that they often tolerated in the marriage, and sometimes even left them for.

Truthfully...

You can become more emotionally aware, more accountable, more confident and more intentional about the way you communicate.

You can recognise your old patterns and work hard to change them.

You can learn to regulate your emotions, establish healthier boundaries and stop participating in unnecessary conflict.

And your ex may continue behaving exactly as they always have.

Your growth doesn't guarantee theirs.

This is something I regularly explore in my work as a divorce transformation coach.

We can spend an extraordinary amount of energy trying to understand why another person behaves the way they do.

Why they refuse accountability.

Why they continue creating conflict.

Why they seem unable to communicate respectfully.

Why they haven't changed, even after the consequences of their behaviour contributed to the breakdown of a marriage.

But understanding someone doesn't give us the power to change them.

And waiting for that change can keep us emotionally connected to the very dynamics we're trying to move beyond.

Does Abuse Continue After Divorce?

Yes. Abuse can continue after separation, and in some situations it can escalate.

Post-separation abuse may involve controlling, intimidating, threatening, harassing or manipulative behaviours that continue after a relationship has ended. They can be directed towards you and to your children. Sometimes even extended family.

It can occur through communication, finances, parenting arrangements, legal processes or other areas where former partners remain connected.

It's important to distinguish ordinary co-parenting disagreements from patterns of coercive

control or abuse.

Not every difficult ex is abusive, and not every disagreement is evidence of manipulation.

But when abusive behaviours are present, the impact can be serious for both the parent experiencing them and the children involved.

And no amount of personal development makes you responsible for another person's abusive behaviour.

You cannot heal someone else's abusive or manipulative behaviour through your own growth.

Nor should you be expected to tolerate it simply because you share children.

You Change. And the Way You Navigate Your Life Changes.

Here is the part of this conversation I want women to understand.

Your ex may never apologise.

They may never acknowledge their contribution to the breakdown of the marriage.

They may never become the cooperative, emotionally mature co-parent you hoped they would be.

And while that reality can be disappointing, it doesn't mean your own life has to remain on hold.

You can become someone who responds differently.

Someone who trusts her judgement.

Someone who no longer feels compelled to defend every decision.

Someone who recognises unhealthy dynamics earlier.

Someone who understands that peace isn't necessarily the absence of difficult circumstances.

Sometimes, peace is the result of becoming more secure in how you navigate them.

You change. And the way you experience and respond to your circumstances can change with you.

That doesn't mean another person's harmful behaviour will stop.

It doesn't mean every conflict disappears.

And it certainly doesn't mean you are responsible for creating safety in an abusive situation without outside support.

It means you can reclaim agency over the parts of your life that are yours to shape.

Your choices.

Your boundaries.

Your emotional wellbeing.

Your relationships.

Your future.

And the example of self-respect, resilience and healthy boundaries you want your children to experience.

You Don't Need Your Ex to Change Before You Start Living Again

One of the most liberating moments after divorce is recognising that your future doesn't have to depend on someone else's personal growth.

You don't have to wait for an apology to begin rebuilding your confidence.

You don't have to wait for accountability to develop stronger boundaries.

And you don't have to wait for your former partner to become a different person before you begin becoming one yourself.

You can continue building a meaningful, fulfilling life even when aspects of co-parenting remain difficult.

You can create new relationships, pursue your ambitions, develop financial independence and experience joy again.

And you can do that while also acknowledging that some circumstances require ongoing support, legal intervention or protective arrangements.

Your marriage may have ended. But your transformation doesn't end there.

In many ways, that's where the deeper work begins.

Ready to Reclaim Your Power After Divorce?

AfterGlow is my 12-month divorce transformation program for women who are ready to move beyond simply surviving the ending of their marriage.

It's for women who want to strengthen their boundaries, rebuild their confidence, recognise and change old patterns, and create a life that is no longer defined by their past.

Because the goal isn't to spend the next years waiting for your ex to become someone different so your life improves and gets easier.

It's to become the woman who knows she can create a different future for herself.

You don't have to navigate that transformation alone.

Explore AfterGlow by clicking here to find out how we can work together.

Carla Da Costa

Divorce Transformation Coach & Author

About the author

Carla Da Costa is a Divorce Transformation Coach and Author who has spent a decade supporting people through personal transformation, including life after divorce. Her work explores the patterns, identities and relationship dynamics that shape how people rebuild their lives after marriage ends

Through her coaching and AfterGlow program, Carla helps men and women move beyond the ending of their marriage and create a more empowered future.