[camillomiller]

“spontan” means in fact both spontaneously and, when used in a planning context, “let’s play it by ear”. So you plan to have lunch but keep it “spontan”, meaning for example that you expect each other to plan closer to the date, maybe even the same date. It’s a very Berlin thing I have to say. At the same time, spontan is even mocked to be a way to kindly part ways. You don’t really want to have another date? Then at the end you don’t make plans and say “lassen wir uns mal spontan treffen”, meaning you won’t probably ever meet again.