I'm the same, don't love her, don't hate her. She's just a person I work with.
I've got to work with her, so I'll be friendly, and treat her the same way I treat any workmate.
exactly brother I mean it depends on your choices but the MC didn't want to be there
the business trip was just a business trip and he thought about Kimberly the entire time
if you pay attention to the MC he was sad the entire time he was just trying to be nice
and he was trying to be nice not because she's his best friend
it is because they work together and he was trying to keep it professional
and it depends on which girl you choose but I bet he was missing her badly for the entire trip
in my case, I am doing a Kimberly-only playthrough so he was only thinking about Kimberly