The Walking Dead is a show about family, so it always needs parents.[/en[en]For a long time, the administrative and procreative parenting duties were split between stressed-out single dad Rick Grimes (Andrew Lincoln), and hope-for-the-future couple Glenn (Steven Yeun) and Maggie (Lauren Cohan).
In Season 6, though, Rick found his first real partner since his wife Lori (Sarah Wayne Callies) died in Michonne (Danai Gurira). Then Glenn died in the Season 7 premiere and left Maggie a widow. And so Richonne has emerged as the core couple -- the patriarch and matriarch of Alexandria.
But The Walking Dead is also a show about loss, so the odds of Rick and Michonne having a long, happy life together are slim.