Malcolm in the Middle

Malcolm in the Middle
Season 5, Episode 20
Victor's Other Family
Image #111

but every group of friends you're in expects you to go to all their parties,

expects friends group parties

TMDB episode metadata

Episode title: Victor's Other Family

Air date: May 09, 2004

Director: David Grossman

Top billed cast: Frankie Muniz, Jane Kaczmarek, Bryan Cranston, Justin Berfield, Erik Per Sullivan, Christopher Masterson

When Lois tracks down her father's "other family," she meets Victor's "other wife" Sylvia, and learns something shocking about her dad.

Source: TMDB