I just noticed Na Rae's look here, it's like saying to the two "Hey, Oppa LSJ said the show should focus on the kids. Stop flirting, it's too obvious!" haha! and LSJ look just like saying " Ya! I told you the show should focus on the kids, not your blossoming love story! ya!"
and I remember reading somewhere, that SM said if she likes someone she will stare at him to let him know. (i dont know if I read it correctly, correct me if i'm wrong) and SG stared at her so sweetly, then he agreed to SM's suggestion to invite the kids over for alumni homecoming but when Na Rae first suggest