Miraculous: Tales of Ladybug & Cat Noir (2015)

S3E22 Félix

On the anniversary of his mother's passing, Marinette gathers the courage to express her feelings for Adrien. However, she is met with a harsh response from his cousin, who bears a striking resemblance to him and pretends to be Adrien. The encounter leaves Marinette heartbroken, as the cruel words shatter her hopes.