As we continue to wait for news on a potential ninth season of 'How I Met Your Mother,' it seems creators Carter Bays and Craig Thomas aren't slowing down when it comes to bringing back past guest stars, especially those tied to the show's mythology. Rachel Bilson is the latest major 'How I Met Your Mother' star to return to the fold for the show's eighth season, whom fans will remember was roommate to the titular mother. Does that mean the endgame to finally meet the love of Ted's life is in place?

'How I Met Your Mother' may not yet know if season 8 will be its last, but its guest stars are certainly pointing in that direction. Makeup artist Jennifer Turchi Nigh recently revealed over Twitter that one-time guest star Rachel Bilson will return in an upcoming episode, along with 'Twin Peaks' star Ray Wise as Robin's father Robin Sr.

Fans of the series will recall that Bilson appeared as one of Ted's love interests Cindy in season 5, briefly re-appearing in season 6. Most notably, she was observed to be the roommate of the titular mother, whom Ted never met during his time with Cindy, but in which he inadvertently expressed an interest.

Of course, we're still waiting to see if CBS manages to sign the cast and crew for a ninth season of 'How I Met Your Mother,' leaving the significance of Bilson's appearance up for debate. Do you think we'll finally meet the mother this season, even if the show lasts another year?