ML has loved the FL all along

ML has liked the FL since middle school (they are in college now)

the leads were previously married and divorced, ML never really got over the FL

leads are best friends, with ML loving FL for a long time

fateful childhood meeting

fateful childhood meeting made him love her

they meet as children, ML falls in love, then they are separated until adulthood

he loves her for three years before they actually start spending time together

he's loved her and looked up to her since he was a teen

he's been harboring a crush on her for a long time

it's a spoiler so I won't elaborate but trust me on this one

ML and FL are lifelong friendly rivals but he's loved her for a long time too

childhood friends

childhood friends

noona romance, he's had a crush on her for a long time

the leads are long-time frenemy rivals, he's crushing on her through it all

ML falls for the FL at first sight and orchestrates their first meeting

leads were childhood friends, he's loved her since then

leads are exes, he never stopped loving her

leads are best friends, he's secretly loved her for a long time

ML loved the FL in a past life and finds her again in a new incarnation, but only he remembers

childhood friends

they were lovers in the past, but FL doesn't remember

ML agrees to a fake marriage to be with her

CEO ML is in love with his secretary

fateful childhood meeting

ML loved FL in a previous incarnation and falls for her again

drama kicks off with the mystery ML confessing to the FL

she hates him but the ML has been into her for a while before the plot really starts

leads were previously in a relationship and he never got over her

ML has a long-time crush on her

childhood friends

ML has a crush on FL

best friends

fateful past meeting

boss in love with his employee

ML watched FL before they met

leads grew up together

childhood friends

childhood friends

best friends

leads are ex-lovers, ML is still hung up on FL

leads are ex-lovers, ML wants the FL back