Lexie: I don't want to keep secrets.
Lexie: I've been keeping secrets all day. About surgeries and rings, and about you. And- And that secret, the-they you secret, it's giving me high blood pressure, and I don't want that secret. ... We're having a relationship. And... if we are in a relationship then, I need to be in it in front of my sister, and Derek Shepherd. If we can't do that, then I can't do this. (walks out of the on-call room)