can't remember this HK drama, only watched one episode

Hey guys,

I watched a hong kong drama a while ago that was about an autistic girl. Not old, seemed like a student. There was an episode where she meets a guy who's supposedly really nice and he takes her on a date but it turns out it's implied he's not a good guy. I don't remember much cuz I was watching it at a friend's place on the TV.

Thanks.