What is with these characters and invading privacy? Like seriously guys??? Um this is a problem between Ame and Azusa? There's absolutely no reason for anyone to interfere nor should they??? Ame should have absolutely not obligation to spill it to Yuya when she's a bystander at best. (And to be honest, I don't think we've even seen Ame and Yuya interact that much to justify their friendship.. like at all??)
Anyways I think the only nonproblematic couple in terms of direct relationships is Kon and Emika but that's not accounting for Emika's nosiness. Though I'm guessing at this point it's really not as bad as Yuya. (Nagisa really is such a horrible influence if I'm being honest...)