The Simpsons - Season 23 Episode 13
The Daughter Also Rises

Marge and Lisas mother-daughter Valentines Day plans take a turn when Lisa meets Nick, an intellectual romantic who shares the same passion for culture, history and literature. Lisa and Nick fall head over heels for each other in a fairytale romance and make a secret getaway to Mulberry Island to profess their eternal love. Meanwhile, Bart and Milhouse are inspired by the hosts of "MythCrackers" to "crack" Springfield Elementarys own legends.