Mark finally confesses the pregnancy to Lexie Grey . Lexie, feeling like Mark is starting a second family without her for the second time (referencing his daughter Sloan), walks away from the relationship.
Chief Richard Webber is vehemently against the idea, leading to a comedic power struggle. [S7E13] Don't Deceive Me (Please Don't Go)
Derek chooses Alex Karev as his resident instead of his wife, Meredith Grey , arguing that their personal connection and Meredith’s family history (her mother, Ellis) would make it too emotional. Mark finally confesses the pregnancy to Lexie Grey
