I am pretty sure ML is shown to be a caring person who was hurt badly by MC. I mean seeing your lover sleeping with your dad is pretty disgusting. I am also not clear what is happening but his family and his dad might have plotted something terrible and portrayed the MC the worst possible human being to the ML. The outburst is justified. To make it worse MC is also not communicating.
Let's see what happens. I am not a fan of overly complicated plot that could have been solved easily with communication. I hope this one has a compelling reason.

Can anyone spoil me about the ML?
Is he a good guy or a red flag toxic? I heard the omega suffered because of the ML and his family. I just wanna know if there is any satisfying redemption arc, don't wanna read it if it is turn out to br like kiss me liar. That one pissed me off.