Kieran teases Cam about the time it takes for him to reply to talk page messages.
They're MakoHaru trash.
With the MakoHaru pairing, initally, Cam was Haruka and Kieran was Makoto due to each of them physically resembling the other and having similar personalites (although they both had elements of the other)
Currently however, Cam now closely matches Makoto in terms of personality (being more extroverted) whilst Kieran is now more similar to Haruka (more introverted)
Both have agreed though that they can flip the roles as and when needed.
This current swap also has to do with Cam and Makoto both being the top and Kieran and Haruka being the obvious bottoms in the relationship.
Cam is the top and Kieran is the bottom in their relationship.