Chelsea is Charlie's second attempt at a fiancee on Two and a Half Men.  So far Chelsea has lasted longer than his last one, Mia.  Chelsea is played by Jennifer Bini Taylor and as of season six, she's been promoted to series regular.

Chelsea Quotes

Chelsea: I love you
Charlie: Great
Chelsea: Aren't you gonna say it back?
Charlie: I'm gonna go pan for cat turds. If that doesn't say "I love you," nothing does

Chelsea: What are you doing?
Charlie: You know what happens when we spoon
Chelsea: I'm sick!
Charlie: So am I!

Two and a Half Men Quotes

Alan: What's the forecast?
Charlie: High tonight, low tomorrow, 100% chance of hangover.

Charlie: For every gorgeous woman out there's a guy tired of banging her.
Alan: But that guy is never me.