But we, when moved by deep feeling, evaporate; we
breathe ourselves out and away; from moment to moment
our emotion grows fainter, like a perfume. Though someone may tell us:
“Yes, you’ve entered my bloodstream, the room, the whole springtime
is filled with you….” – what does it matter? he can’t contain us,
we vanish inside him and around him. And those who are beautiful,
oh who can retain them? Appearance ceaselessly rises
in their face, and is gone. Like dew from the morning grass,
what is ours floats into the air, like steam from a dish
of hot food. O smile, where are you going? O upturned glance:
new warm receding wave on the sea of the heart….
alas, but that is what we are. Does the infinite space
we dissolve into, taste of us then?

– THE SECOND ELEGY, Rainer Maria Rilke

At a certain point friendships arrive at a balance between memories of shared times and the beckoning future. They begin to unravel with the tacit awareness that the store of memories exceeds any that will be generated in the future. This can be followed by a realisation that the friendship is all memory-based, when there is nothing but memory, and that in order to protect these memories it is best to call a halt. This way there is often a feeling of considerable satisfaction in knowing that a friendship is effectively over. ……
Just as there is a phase of equality in friendship so there is also moment of disequilibrium when one party is aware that this phase is past. When both parties know this then a new frosty or fraught kind of equilibrium is acheived. It is marked by mutual unease where before there had been mutual ease and relaxation. This unease is intensified by the fact – one of its symptoms – that it cannot be talked about. ……

– p. 71-72, The Ongoing Moment, Geoff Dyer