Braceface (2001)

S3E18 Act Your Age

Sharon is feeling downhearted as she searches for a decent guy, only to find them all to be childish, foolish, or unpleasant. Just when she thinks she’s hit the jackpot with Pablo, she discovers he’s only 12! Now, Sharon faces the challenge of managing her feelings for someone so much younger while keeping his age a secret from Alden and Brock, who would never let her live it down if they found out!