Two and a Half Men - Season 1 Episode 16 -

Now Frankie has tricked the Harpers into taking her and her daughter Joanie in, she explains that Bob's parents want her declared mentally incompetent in order to get custody. Charlie wants to dump her, but Alan insists on taking them both in. Jake doesn't enjoy the 8 year old's 'romantic' attention. Charlie hates the consolation kisses and compliments, and is stunned when Frankie prefers intimacy with Alan. Charlie rightly warns him he's just falling for his 'damsel in distress', but warns her not to hurt his kid brother.