TikTokers are testing their relationships with oranges and ketchup   TikTok’s viral “orange peel theory” and what can only be described as “the ketchup cleaning test” are putting Gen Z and Millennial relationships up to the challenge—but really, they’re just exposing the mediocracy of some of their partners. The “orange peel theory,” as explained by TikTok user @annabhamm back in November, is about a partner “performing tiny acts of service (which is one of the original five love languages), especially ones that you can do by yourself.” In the case of this specific test, a girlfriend (typically these videos showcase...