The Fox drama centered around five orphaned siblings, but their significant others were just as important to the family drama as the Salingers.

In particular, Jennifer Love Hewitt, who joined the show in Season 2, cemented her place in Bailey’s heart as his on-and-off high school girlfriend until Hewitt ultimately departed in Season 6 for her own short-lived spin-off "Time of Your Life".

https://tvline.com/lists/best-tv-characters-late-cast-additions-seinfeld-buffy-the-office/best-tv-characters-late-cast-additions-sarah-party-of-five-jennifer-love-hewitt/