Boy Meets World S03 E12 The Grass is Always Greener

"His older brother likes girls. His younger sister likes dolls. His parents like rules. And he'd like to know where he fits in."

Cory feels uncomfortably domesticated, having been with Topanga for so long. So he misses a date with her to go to a school party with Shawn and the guys. However, Cory finds out that she is at the party, disguised as a French student.