Well, we were always going to fail that one," said Ron gloomily as they ascended the marble staircase. He had just made Harry feel rather better by telling him how he told the examiner in detail about the ugly man with a wart on his nose in the crystal ball, only to look up and realize he had been describing the examiner's reflection.
The fragility of love is what is most at stake here - humanity's most crucial three-word avowal is often uttered only to find itself suddenly embarrassing or orphaned or isolated or ill-timed - but strangely enough it can work better as a literal or reassuring statement than a transcendent or numinous or ecstatic one.
Anyone who isn't embarrassed of who they were last year probably isn't learning enough.