Responses
More spoilers:
ML does legitimately care for and likes MC at this moment. Without giving too much away, ML’s family dynamic is complicated; it puts ML in a position that he feels he must constantly manage his image.
I think this will come through well when we get the ML’s pov. Those were some of my favorite chapters.

It’s totally fair that people are icked out by ML’s expression/confession rn. I got impatient and read the novel.
Slight spoiler for those who want a reason to keep reading:
It does start to feel genuine later. ML has the upper hand right now and likes to be able to control the narrative (it’s a defensive mechanism… he’s the traumatized alpha.). He loses that control at some point and has to be genuinely emotional—he has to chase MC. It’s really satisfying because the relationship starts to feel equal between MC and ML.