A Love so Beautiful- They are both in love for a long time but the FL is vocal about it while the ML does not say anything because he's reserved and shy. It's clear that he cares for her, he just doesn't show it as much. They are part of the same circle of friends.
Reply 1997- This one fits somehow but if I say more I'll be spoiling it since you have to guess who she'll end up with.
Go Ho's Starry Night- They're not friends but co-workers. He's her boss and he's had a crush on her for the longest time but he's kinda clueless on how to express it so she perceives him as being mean to her. He has seen her suffer through relationships and has tried to approach her but he always kinda blows it.
Ho Goo's Love- He has been in love with her since they were in high school, they meet again as adults and he's there for her through the hardest situations. She ends up falling for him. He's the sweetest person and is perfect for her alpha female type of personality.
I Hear Your Voice- It's a noona romance, he's been in love with her since he was a child. When they meet again she's a lawyer and he's in his last year of high school. She's not interested in him because he's younger but ends up falling for him. It's a supernatural drama as he can read minds,
I Need Romance 3- Another noona romance with him being in love with her since he was young. She is in love with someone else but falls for him in the end.
Pinocchio- They grew up in the same house (he's her adopted uncle) and he's been in love with her his whole life. He's very conflicted about his love because he hates her mother.
Wednesday 3:30 PM- He's her close friend and is in love with her. She gets dumped by her boyfriend so she and the ML act as a couple to make the ex jealous. In the process she falls for him.