Mark tells Callie that he and Teddy had sex, boasting, "I blew her mind." That's pretty much the same thing Teddy tells Arizona, saying, "He's a legend for a reason. He has skills I never even knew existed!"
Meanwhile, Owen is still in his "dark place," as Cristina calls it, and refusing to talk to her or go see Dr. Wyatt. During a surgery on a cop who survived a shoot-out but still has several "devastator" bullets inside her, Cristina sets one off accidentally and Owen chews her out. Teddy sees how upset Cristina is and advises her, "His triggers may never go away. He won't go to therapy if you tell him to. Don't ever tell him what to do."