Author’s practical guidance
One of you is the fun one, the other is the rules
Source named in the book: coparenting research (Feinberg) · Positive Discipline (Nelsen)
It usually starts by accident.
Say this now
“I don't want to be the only no in this house.”
Says the real thing without an accusation attached to it.
(in advance) "Bedtime is yours tonight — all of it, rules included."
Roles change by swapping the whole job, not by discussing fairness.
Do this
- Swap the hard shift, not the easy one: bedtime, not the park.
- Let them do it their way once they have it. Correcting them recreates the split.
- Take the fun parts too. The rules parent is usually also short of joy.
- Say the limits out loud in front of each other, so the child hears both voices holding them.
- Name a role early when you notice it hardening.
Avoid this
- Keeping score out loud about who does the hard parts.
- "Ask your father" — outsourcing the refusal trains them to route around you.
- Being the fun one for an hour and handing back a wound-up child with no rules.
If it repeats
This one rarely improves by talking about fairness. It improves by rotating the actual hours. Give it a month of real swapping before concluding anything about either of you.
Why the book suggests this
It usually starts by accident. One parent is home for bedtime, the other arrives for the weekend. Within months the roles are set and both people resent them: the rules parent is exhausted and cast as the villain, the fun parent is loved and quietly considered unserious.
Children do not need both parents to be identical. They need the limits to exist with both of them. When limits exist with only one, the child does not get more fun — they get an adult they can wait out.

From this collection
Same Words: Every Grown-Up
45 prepared situations in this family area.