I don't think Always and A Millionaire's First Love can be described as "light" and "not sad". To answer Phikyi, yes, it is. I checked Loretti's list and she's already watched those two, though. :)
Anyway, I recommend the following:
- Our Times (Tw)
- I Fine, Thank You, Love You (Thai)
- Heroine Shikkaku (Jp)
- Teacher's Diary (Thai) - If your definition of "romance" means having to be in constant interaction with each other, I guess this one fails. But it's a good watch in general.