This recap contains SPOILERS for Grey's Anatomy Season 21, episode 15 "Bust Your Windows."
Ben asks Bailey to help him study for his boards, at which point he learns never to bring flashcards to a date proposal with his wife. He attempts to befriend Taryn, who continuously brushes off his attempts, saying she doesn't have time for him. The two end up co-treating a 9-year-old patient, and together they find a way to turn a scary hospital visit into a daring superhero mission. He later confronts Taryn to ask why she won't let him in, and she confesses that Levi's departure has left her with more work than she can handle, both at the hospital and at home. When she says she has no one left to study with, he offers to study with her, and she begrudgingly accepts.
Winston and Jules rush to the scene as a window washer unintentionally crashes through a large pane of glass. After they stabilize and rush him to surgery, Jules begs him to page neurology when they discover a clot blocking blood flow to the patient's brain. He removes the clot himself, and after initially judging the sizable age gap between the patient and his wife, finds himself on the roof with Jules. There's a moment. Both of them feel it. On the way back down to check on their patient, Weber eyes them with suspicion. He's seen a lot of shenanigans go down at this hospital. He doesn't miss a thing.
Simone and Blue are bickering, as roommates do, over his choice to invite a friend to crash at their house without warning her first. Even as they assist Weber in treating a patient's mother -- now a patient herself -- after the window incident injures her, their conflict annoys him enough that he threatens to kick them out of the OR. Afterward, Blue admits that he's still hurting over Molly, and Simone apologizes for exposing him to Lucas-centric PDA. At the end of the day, she is about to invite Lucas to move back in -- only for him to not only share good news, but start planning years into their future on a whim, including the possibility of moving away from Seattle. Visibly unsettled, she invites him to dinner instead.
Lucas joins Catherine for a chance to care for a 14-year-old patient -- and impress the only person who can reverse his remediation, since Weber hasn't been able to talk to her about it. Throughout the day he fumbles several times -- he's still an intern learning all the aspects of patient care, after all. But when Bailey laments about having to give the patient a seemingly outdated procedure -- and Catherine agrees -- Lucas promises he'll find a better way. Catherine says he'd better finally impress her. He finds an alternative procedure that Bailey says he can lead, but when he gets paged for another procedure, he chooses to walk away from the potentially life-changing opportunity. He later apololgizes to Catherine, but she reminds him that his lack of judgment was the reason she recommended he be held back. And his show of judgment in taking the emergency case over his initial procedure earns him the right to move forward with the rest of his residency class.
With only three episodes left in this season, chances are things are going to start getting ... quite interesting. Bring on the drama.