Can someone recommend me a drama where a good girl falls for a bad boy

should be:

- korean drama

- the guy doesn't have to be rich or anything

- no supernatural, like someone coming from another time or galaxy or whatever :D

- if possible, not to be too old, like 2011/2012 - present

Thanks!

Okay so:
Playful Kiss
Boys Over Flowers
Cheese in the Trap
Mary Stayed Out All Night
Brilliant Legacy

I don't remember VERY WELL because its been such a long time but I would say those characters fill the bad boy category in one way or another. (ps: my fave is Playful Kiss HOHOHHO)