One of the lovers-to-be is riding the subway (to work?) and sees a person (shh it's the other lover-to-be but we don't know it yet) looking at him/her and drawing in a goofily large notebook. They maybe have an uncomfortable moment together because neither really wants the other to notice him/her. At the end of the scene it is revealed that the drawer has rendered a comic-style portrait of the other's shoes. It is heartfelt, and that is how we know that they're meant to be.
