There are unspeakable wrinkles hidden in everyone's love - or the unspoken farewell on the street corner at midnight, or the platform where no one is waiting in the morning fog, or the faded movie ticket stubs hidden in the drawer. The bitterness after peeling off the sugar coating will ferment into amber spots over the years. We will eventually understand: Regret is an indispensable slice of love, a completion with a gap.