Fragment of sometime, somewhere

A young man and woman say goodbye to one another in an abstract representation of an apartment entrance. He is leaving. They struggle to separate. They exchange a piece of paper, which hints at their past together, as a farewell gift. A young man and woman say goodbye to one another in an abstract representation of an apartment entrance. He is leaving. They struggle to separate. They exchange a piece of paper, which hints at their past together, as a farewell gift.