S7E16:What Had Happened Was...

After Aaron (guest star Richard T. Jones) and Joan (Tracee Ellis Ross) experience an uncomfortable moment when they run into one of Aaron’s ex-girlfriends, they decide to discuss their past relationships with one another to avoid future awkward moments. However, when Aaron introduces Joan to one of his good friends, Keith Atwood (guest star Troy Winbush), Joan realizes they once had a brief affair, but she failed to share this with Aaron because Keith was married at the time. Meanwhile, Darnell (Khalil Kain) helps William (Reggie Hayes) cope after losing Monica (Keesha Sharp).