Danica McKellar and Fred Savage had a crush on each other during The Wonder Years. The first kiss between their characters was McKellar's first kiss in real life, and the crew applauded.

Sources Fred Savage Fired as Director and EP of 'The Wonder Years' for Alleged 'Inappropriate Conduct' Fred Savage Says He'll Remember His First Kiss on 'The Wonder Years' Set 'Forever': 'I Was So ...