The first time you and your partner talked about the fact that the being in love feeling is over; how did you experience that conversation?

Me and my girlfriend discussed this before, but more in general.
Some days ago we talked about the love we feel for each other, and the possible ‘dangers’ of falling in love with someone else and what to do with that possible feelings.
Automatically we acknowledged that, while we love each other, the being in love, the infatuation from the beginning, is over (for both of us).
There are of course (obviously) moments/periodes of feeling in love with each other.
The realisation and acknowledgement of this was a bit unheimlich; it felt, strangely, as a kind of rejecting/rejection and/or dismissal.
Emotionally so, not rationally, but still…
We are okay, knowing and realizing this; we love each other dearly.
My question: How did you experience these talks (if you had them, that is)?
And your partner? If that is too private I understand.
Thank you in advance!