Mia's return finds Charlie questionning how devoted he is to Chelsea. Alan tries to write a screenplay. The guys rush a laboring Judith to the hospital.

Charlie seeks to take advantage of Alan and Chelsea's budding friendship. Alan takes up ventriloquy.

Both Charlie and Alan face lifestyle changes when Chelsea moves into the house.

Alan lets Chelsea fix him up on a blind date with one of her friends—Rose.

Charlie's desperate to make sure Chelsea and Evelyn don't befriend each other following their first meeting

Chelsea's illness gives Charlie a chance to prove he can take care of her, but also yearning to run away from the situation.

Charlie's admission that he's in love with Chelsea gets a surprising reaction from her.

With Chelsea soon to arrive, Charlie must find a way to get a half-naked date out of his bedroom.

Charlie agrees to go with Chelsea to couples counseling with Dr. Linda Freeman

After a birthday party she throws for Alan is met with indifference by his family, Melissa feels he's underappreciated and offers him the chance to live with her and her mother.