So much evaporates after a breakup -- the sweet texts, the lazy brunches, the shared Hulu account you both used for the “The Handmaid’s Tale.” But mementos from your time together remain, like relics of another era. Is it better to hold onto these things, or to dump them? Meredith investigates. With a cameo by Margo Howard. Email us at firstname.lastname@example.org or find us online at loveletters.show.