ML treats FL kindly at first or always, distancing themselves in the middle because of love and life matters, ML later falls in love, ended up together after all problems is solved:
Hidden Love (FL thinks ML dates another girl, ML treats FL like a younger sister)
My Cherie Amour (FL thinks ML likes his brother in-law's younger sister and even helps ML to get SFL)
My Forever Sunshine (ML dates another girl, ML rejects FL, FL falsely accuse ML of sexual assault which indirectly caused ML's car accident and broken legs)
Unrequited Love (ML dates another girl who takeover/lies about being the girl ML love; FL)
You Are My Glory (ML rejects FL because he thinks they're not a match as FL looks shallow and has no goal/ aspiration whatsoever (men heh, but it's Yang Yang) even though she's smart and hardworking, and also because at that time ML iirc likes/ dates another girl)