>>46630022They barely interact and even for Koharu he's the first person she mentions when referring to the duo. Even in episodes where she tags along she interacts more with Goh than anything. Even in her Ponyta episode was this reinforced with how proud Goh is of Koharu and the way she automatically gets her mind focuses when she speaks to him as opposed to Ash. Not gonna say they're a couple or even something stupid like shipping them but it's clear their friendship is very much the strong.