I don't like what hanjoon is doing

hanjoon didn't even try to question his brother about why he did that to danwoo?? He just nagged him a little and ended it there, honestly it feels like hanjoon is never serious... he gets jealous about danwoo feeling something for his brother and yet he leaves the two in the same car?? And WHAT?? they all hang out together after THAT happened??? Hanjoon doesn't seem sane