I'm like 100% sure she's gonna end up with yoo yeon and not jae hyun (just speculation not a spoil but like IM ONE HUNDRED PERCENT SURE LMAOOO) and tbh it's nice. He seems like the kind of character who wouldn't really act on his feelings and I've seen A BILLION second male leads do that and they lose in the end because of it. But also here it's kind of obvious because Jae Hyun gets like ZERO screen time ya know?