All I’m hearing is that somehow Jiri is stuck in a Bl harem, but somehow all parties are completely oblivious to this
I really can't say. Some guys are just possessive, and the BIL is suspect, but there's no real proof of anything going or having gone on in the past. He might just like it that Jiri likes him and doesn't want him to transfer that to Yuri.
Oh wow, now that would be really f*cked up on bil’s part. I wonder if Yuri and BIL will get into it again. (Fight/ argue)
...didn't he seem to be putting on an act at that table especially after the way they spoke in that private convo? They haven't spoken for THREE years, but he bought him a gift and said think about ME and keeps calling him? I think there is more story there, and maybe the BIL is jealous of Yuri and Jiri, and does the sister talk about Yuri to the point where BIL is jealous of that relationship?
I also think Yuri does have a hidden crush on the Jiri, and maybe one he's not aware of just yet, and he wants Jiri to let go of his crush on that BIL badly. The ending of S1 was very nice, but I wanted him to go back to his hotel. lol :P I wanted to see them be intimate without alcohol, but that will come I'm sure.
Can't wait for S2 though.