Callie and Arizona decide to play Cupid on Valentine's Day for Ben and Miranda, which Miranda resists. Finally, she admits she's interested. "I can't talk to you, you make me nervous," she stutters to Ben. "I just go stupid," but we grin that she's agreed to dinner.
Mark is so excited about Sloan's baby that Callie doesn't recognize the new, responsible Mark. He shows he's the same guy when he goes to hit on a new blonde. We have to laugh when the blonde turns out to be Lexie, who's dyed her hair! "You didn't know it was me and you were hitting on me. You are hypocritical and slutty," she tells him. He replies that she can't "pull off" being a blonde.
When Callie finds out that Sloan wants to put the baby up for adoption, she forces her to tell Mark the truth: "I'm not a mom. I'm not ready," Sloan says. Mark is stunned, but we're even more stunned when he offers to raise the baby! And when Callie says she'll help!