Try this
- State the event plainly and check whether the date or description matters to both people.
- Avoid assigning symbolic importance automatically. A first recipe or first train trip can remain a small event.
A worked example
“This might have been the first meal we cooked together. I’m not certain of the date, but I remember the burnt toast.”
An invented example to adapt, not a real exchange or a script you have to follow.
Before you leave it here
If the other person remembers an earlier occasion, add that context. The memory does not lose value because its milestone label changes.