But Garam is also acting a little bit like a child and the prof also treats him like he is still a teenager or sm.
Imo if they were both adults they would talk without fear or anger but they are both still so immature. The silver lining is that they look like they are growing up together this is like the main goal for a healthy couple but keeping secrets is more or less like cheating , it’s really bad for a relationship so I think it’s reasonable if teacher gets angry.

I hate it when Garam is keeping a secret because we know what's gonna happen on the future chapters, and I hate it. Professor gonna hurt and resent Garam more because of this, and Prof. even discovered the info on the collaboration through third-party source.