Tammy LaFontaine is the daughter of Ronnie and Amber LaFontaine, the Dunphy's next-door neighbors.

Luke develops a crush on Tammy, watching her sunbathe on her parents boat, from his bedroom window. Luke tries to talk to her, while she blows him off and insults him. Alex gives him advice to just ignore Tammy when they see each other, which he does — which in turn bothers Tammy enough that she wants him to come back and talk to her.

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