Finding series with opposite attract and quiet male lead

I just start to watch "You are my lover friend" and i really like the dynamic of second couple(not the married one) so i would like to ask for recommendation similar to them.

What i am looking for

1. Opposite attract with quiet ml(not a must just preferable) and fml who is not too childish, more calm vibe just like in the drama i mention(not a must)

2. Does not have to be main lead

3. Prefer series over movies

4. ml fall first is prefer

Thank you very much.