I May Love You (2023) - Guess this CDrama is something you'd like
Also, other that are not exactly like that, but you may find it okay:
Find Me in Your Memory (2020) - ML does like someone else and rejects FL, but she persists and accepts him quite easily for me
You Are My Glory (2021) - ML rejects FL but because he thinks that she's not good enough for him back in the day. Few years later he dates someone else and juuust years and years later he and FL see each other again (My fav drama, I've watched like 6x - bear with the first 10 episodes or so 'cause they focus on a game, after that it's so amazing and mature)