Plenty of things in life have expiration dates: cartons of milk, your passport, antiperspirants. After a week in the fridge, you should really retire that open bottle of wine. Relationships, on the other hand, don’t usually come marked with an end date. You might see the end coming from a ways away, but the ‘when’ is, in most cases, unclear. Not so in Ephemera (French: Les éphémères), a new narrative experience currently in development by Interim Studio. Designed by Lazlo Bonin and animated by Jazz Eladas, Ephemera is a “notgame” in which you have one fleeting summer to spend with your love…