When Kim left Adam he was blindsided. But after a long overdue conversation, they decide to get back together with one adjustment - they're keeping their relationship secret until they're settled in work.
Working in Intelligence means friendships are formed in a pressure cooker, and when Kim Burgess spends more time with Jay Halstead, benefits are added to their friendship. But when wires are crossed and Kim realises something she cuts their friendship back to protect herself and keep Jay happy.