"Sometimes you have to give yourself permission to not be hardcore for once." Meredith muses about listening to the voice-over and taking a sleeping pill, but Cristina tells her not to; she'll just get strung out and "turn into a bad after-school special." They're in Meredith's bed, and Cristina leans back and shuts her eyes, telling Meredith they'll just sleep. It's a great moment -- one that's a really true depiction of true best friends. Meredith doesn't close her eyes, and finally admits that she can't stop seeing Derek; that it's not about the sex, but about the moment afterwards when the world stops. "I just feel so safe. So safe. I'm not ready to give that up. Does that make me sad and weak and pathetic?" Cristina admits, "A little bit." Meredith thinks about it and asks, "What do I do." And Cristina has to take a big step, for her, by admitting defeat and whispering, "I don't know."
As they lie there, Mere's VO cheerleads, "You don't have to be tough every minute of every day. It's okay to let down your guard. In fact there are moments where it's the best thing you could possibly do." Someone is letting down their guard outside, as evidenced by the laughter and the sound of something crashing. Mere gets up to investigate, and finds her half-sister wrapped in a sheet and giggling with a shirtless Alex.
Meredith's voice adds, "As long as you choose your moments wisely." Lexie, very carefully, pleads, "Alex, please tell me that you don't live with Meredith Grey." It's really unfortunate that she didn't get the memo that anyone who works with Meredith will at some time or another live in that house. Meredith, meanwhile, just leans miserably against her bedroom door, probably to think some more about, but not do anything about, her problems.