Adultery in a blended family: additional fault lines

Adultery in a blended family affects more people at the same time. How do you maintain peace in two family systems? Petra Wijen explains what works.

Adultery in a blended family affects not one family system but two, sometimes three. There are ex-partners, stepchildren, loyalties that have been under pressure for years and agreements that are enshrined in co-parenting agreements. The crisis is therefore not greater than in other relationships, but the fault lines are running at more places at the same time.

Why a blended family makes the relationship crisis more complex

In a family without previous relationships, the crisis lies between two people. In a composite family, it lies in the midst of a network of relationships that existed before you. Your partner’s children have loyalty to their own parent. Your children have loyalty to you. And somewhere in that network is the ex-partner, who may have been struggling for years with the new situation.

That already makes the question of who belongs to what all the more complicated. But there is more. In my practice, I often see that partners in a blended family tend to hide the crisis precisely because so many people are watching. They act on the outside. At home, everything is on high alert. That combination costs an enormous amount of energy, and delaying honesty makes it harder later on, not easier.

Who hears what: the question that no one tells you how to answer

The main rule is simple: children are not partners for conflict resolution. This applies in every family. In a blended family, the application is more difficult, because children pick up on things more quickly when there are two households exchanging information.

Stepchildren do not hear anything directly about your crisis. They are not a party and must not be one. There is a risk that they will develop loyalty problems: to which parent do I actually have allegiance? That is a burden that belongs to adults, not to them.

The same applies to one's own children. In the blog Staying together during a relationship crisis It details how to protect children without lying. This is doubly important if there are stepchildren in the family, because information can then leak through multiple channels.

The ex-partner doesn’t hear anything. That sounds obvious, but in practice it’s not. As the crisis escalates and there is emotional contact with the ex about co-parenting, more information than you would like quickly slips in. Keep the communication about the children businesslike and functional. The rest is not their business.

How to maintain peace in two family systems at the same time

This is the practical question that most people ask themselves, but they rarely see an answer to it anywhere. The answer is: by keeping the systems consciously separate, even if that feels inconvenient temporarily.

Specifically, this means:

  • Just keep the co-parenting arrangements in place. Even if you’d prefer to freeze everything until you know what’s going to happen next. Disruptions in co-parenting are immediately felt by children and give them the signal that something big is going on.
  • Communicate with your ex-partner about the children through the usual channels, at the usual times. No more, no less.
  • Keep your home environment separate from the social circle that you share as a united family. Friends who know both you and your partner as well as the ex-partner are risky at this stage. That is not distrust; that is protection.
  • Give yourself a separate space to process the crisis, away from the sight of all the children in the family.

This is not about pretending that nothing is happening. It is about creating structure in a situation that would otherwise spiral out of control.

The specific pressure on the partner who manages the exterior

In my practice, I regularly encounter entrepreneurs and professionals who live in a blended family. The combination is tough: you are visible to clients, employees, or business partners. You are visible to two family systems. And somewhere in between, you try to figure out what went wrong at home and whether it is fixable.

Functioning does not mean that everything is going well. Just because it's going well externally does not mean that it's going well internally. If that pressure persists, sooner or later it will come to a standstill somewhere. In the blog Functioning at work while everything is on high alert at home It states what that combination does to you and how to get a grip on it.

What helps when the fault lines are active at the same time

One thing makes a big difference: a clear distinction between what you do as partners and what the family systems do. Those two things blend easily into one another in a blended family. The crisis is of you two. The children, the ex-partner, the logistics of co-parenting: they are all part of it, but they cannot solve it and must not be allowed to be damaged by it.

Deliberately introducing that distinction costs effort, especially when you’re in the middle of an emotional storm. Reconnect Coaching’s Adultery Recovery Programme is specifically focused on restoring the relationship between partners, taking into account the context in which they live. Composite families are often involved in this type of support, and the added complexity is not a hindrance but a given that is consciously addressed.

If the situation is acute and you don't know where to start, offer Direct Support the possibility to start within 48 hours. The first step: rest, then clarity, then control.

Veelgestelde vragen

Should I tell the ex-partner that there has been an affair?

No. The ex-partner is not a party to your relationship. As long as the children are protected and co-parenting arrangements are followed, there is no reason to inform the ex about what is going on between you. In most cases, more information leads to more complications, not more understanding.

How do I deal with stepchildren who notice something?

Recognize that there is tension without giving details. Something like ‘the adults are having a bit of a hard time, but you don’t have to worry about it’ is honest without being accusatory. Make sure their daily routine remains intact. Structure gives children security, even when they don’t exactly know what’s going on.

What if the ex-partner gets involved with the situation?

Keep it professional. Don’t answer questions about your relationship and don’t give information that isn’t about the children. If the ex-partner gets pushy, that’s annoying but not a reason to cross the line. That line also protects the children.

Can we work together in a supportive way while co-parenting arrangements are also in place?

Yes. Guidance at Reconnect Coaching focuses on the relationship between partners. Co-parenting and the logistics surrounding children continue as usual. The guidance aligns with the reality of a blended family, including the time pressure that comes with that.

How do I explain to my own children that nothing is wrong, while something is indeed wrong?

You don't have to say that there is nothing wrong. What you can say is that the adults are working something out together, that it's not their problem and that their lives just go on. Children need more security than they need completeness. More about this can be found in the blog about staying together as parents during a relationship crisis.


Petra Wijen is relationship coach and author of the book Adultery. From Reconnect Coaching, she guides couples and individuals through relationship crises following infidelity, with special attention to the context in which people live and work. More about Petra

Share your love

Newsletter Updates

Enter your email address below and subscribe to our newsletter

Leave a Reply

Your email address will not be published. Required fields are marked *