Case. One partner is ready for children, the other wants to wait; the topic turns into a source of pressure.
Model. A roadmap mismatch. Ultimatums here are especially dangerous — a heavy request to a system under load.
What helped. They took the decision out of pressure mode: discussed each other’s fears and conditions, agreed on checkpoints without ultimatums.
Lesson. Such decisions are made in dialogue and over time, not under a deadline.