Seo-in did both lol
YES!
we love to see it
i feel like Yeongwon fell first bc he loved Seo-ins face and kept starring but Seo-in def fell harder omg, he is like obsessed (in a postive way)
True, all that blushing giving him away ⁄(⁄ ⁄·⁄ω⁄·⁄ ⁄)⁄
I think it was just an admiration?
We can literally tell at this point who fell first and fell harder.