War of the Roses is one of the best relationship features of all time.
It’s been around awhile, and the name of the feature (taken from the movie of the same name) is a bit dated, but it still works. Just don’t reference the movie. That will date your show in a negative way.
Many shows continue to have great success with it, including Ryan Seacrest (Ryan’s Roses), Dave Ryan (KDWB/Minneapolis), Mojo In The Morning (Detroit) and Jagger & Kristi (Magic 92.5/San Diego). It holds up if you put prep time into the story you’re telling each day.