technically, while sungho was not her first relationship ( that would go to a boy in secondary school where they only went out for a week, breaking up because he was too scared to even hold her hand ), he was her first everything else. first kiss, first date, first real relationship, first time, first love, first break up. she's not sure if he knows, but because of that she's naturally developed a soft spot for him. now that, she'll make sure to never tell.
they were kids when they dated, kids when they broke up, and because they didn't really speak afterward she didn't really pay attention to him growing up. she's a little shell-shocked ( for lack of a better word ) when she speaks to him now, not used to seeing him so manly and confident.
since their meeting at the nam's divorce party, she's started checking his instagram a lot more than she'd ever admit. there was a joke about her liking year old photos at 3am, and she ... might have done it accidentally since then ( and screamed out loud ). she'd blame it on her dog if he ever asks. please don't ask.
one her favorite jackets to wear is actually his ⏤ she thinks it's something that slipped through the cracks during the breakup because he never asked for it back. even if he did, she would have told him she didn't know where it was. it's nothing special ⏤ simple and black, still way oversized for her frame, but she refused to let it go because it was super soft and her go-to for comfort. she wears it out from time to time, nearly forgetting that it's actually his. nearly.
sungho is the only boyfriend of hers that her dad remembers. anytime she mentions her relationships around him ( past or present ), he always asks if she's still seeing that yoo boy. he's met her other partners before, whether accidentally or on purpose. it's almost become a running joke between them with the way she interrupts him mid-sentence every time with dad oh my god, really?