Everyone is at Derek’s party and Owen asks Cristina to move in with him and she drunkenly accepts. Meredith isn’t happy about it and tells Cristina to think twice because something is up with Owen and Teddy. Meredith tells her she cant say anything else and leaves.
Miranda and Ben are about to get to it when she starts to lecture him about keeping their romance a secret. He gets naked and quickly changes the subject back to the present.
Teddy gets to Marks house when she catches him in bed with Reed. Mark suggests a three-some and Reed gives Teddy a look like maybe it’s a good idea.
The next morning Teddy laughs it off in front of Lexie who isn’t too happy to hear about her ex’s rendezvous.
Henry is a patient of Owen and Cristina’s when he spots a long lost love - Betty in the hallway. Something about their reconnection angers Cristina. They both loved each other and one night had an affair behind their fiancé’s backs. They decided to go through with their marriages anyway and to this day, no one compared to the love they shared together.
Before Betty goes into surgery, Henry asks her to move in with him. She tells him no because she got over him. She has another life.
Throughout Henry’s surgery, Cristina starts to pick up on Teddy and Owen’s closeness. Cristina gives Meredith the cold shoulder because she wont say anything.
Later, Henry’s heart gives out, but the doctors are able to save him. Betty tells him that she lost him once and doesn’t want that to happen again. She agrees to move in with him.
Derek and Mark are in the elevator and put it together that Miranda and Ben are knocking boots because they are both humming the same tune.
Hayley is Alex’s patient. She tried to claw her eyes out and everyone thinks she is crazy. Hayley tries to kill herself and Alex is able to talk her down. Derek wants to run more tests and the parents aren’t happy about it at first, but later agree.
The scans show up nothing so Derek and Arizona want to call off the research. Alex advocates that she isn’t crazy and Derek gives him four hours to come up with something before they commit her.
With Lexie’s help, Alex is able to diagnose what is wrong with Hayley. She is not schizophrenic, but has a rare disease that makes her hear everything. The surgery works and she can now go on to living a normal life.
Mark, Meredith, and Jackson’s patient Amber is in to get plastic surgery for her face, when Meredith points out that her hand is in critical condition. They tell Amber that she cant go through with the surgery anymore because she has to go in to get three of her fingers removed.
Miranda sees Ben flirting with a nurse and backs away. He tells her that he was just badly flirting with the nurse because it makes his job easier, but with her, he really means it. She tells him she is not looking for just a fling and he tells her that he isn’t either. They leave the hospital holding hands.
Amber is able get the skin graph and tells her friend to be real with her. This inspires Meredith to lecture Owen into telling Cristina the truth because Cristina loves him and believes in him.
Owen tells Teddy and she doesn’t know how to take it. He tells her that he isn’t sure how he feels for Teddy. Teddy is in the hallway and hears the whole conversation.
Cristina shows up at Meredith’s house and tells her that she is not going to move in with Owen anymore.
Mark goes up to Lexie and tells her that he really loves her and wants to marry her. She leaves stunned with Alex.
Callie is tormented throughout the episode with her feelings for Arizona. At the end of the show, the two of them are alone in the elevator and Arizona gives Callie a very passionate kiss and walks away.