I think they both matured from this relationship or "Ship", before the body language of the two was very close and now it's "correct" so to speak, All the girls adore each other, but you always saw in the background how these two were chasing each other, now that doesn't happen anymore and that's ok, people grow up.
For those who keeps on talking about chaeyoung’s situation is over we don’t need to talk about it anymore just Leave chaeyoung alone and be respectful and kind to her she’s not guilty for anything I’m still defending her because she’s my bias wrecker and there’s nothing you can do about it and don’t tell a special needs person to leave because I’m not leaving