Responses
You can usually tell a persons nature by how they treat others. Mr. han is hot but he is a dick. Look how he treated that red headed guy with the blindfold. Plus, he is clearly shown to be a guy who sleeps with a lot of guys. He most likely sees Param as a person he is interested in sexually while Param wants an actual relationship from him. He just gives off red flags in general. But I agree with you about the first thing. I wasn’t really sure why Param was upset about him knowing that he liked him. That whole situation was confusing.

I don't really see anything wrong with what Mr. Han did? I mean him "knowing" that Param liked him but still testing the waters, and I don't really understand why Param was so hurt by it. People are allowed to feel however they feel you know, but I don't think it's wrong to test things out, I mean they had no commitment to one another, they're not even friends, they're just coworkers so if anything it's actually wise to try to gather the situation, because even if you have a hunch that a person has a crush on you you could always be wrong. Also he didn't out param or anything, he just shot his shot after seeing him at a gay club....... so yeaaaah. I really don't think he's wrong at all.
He does act suss and if there's anything that made me look at him and be like "uuuh sir wtf" was how he treated that dude he was sleeping with, those were ultimate dick moves. But yeah he ain't done nothing wrong towards Param... and I also do think that he has a genuine interest on him and that he could potentially cherish him.
But y'all who hate him can stay offended, it's okay.