Some dramas that go along these lines:

 - Sealed With a Kiss

 - Secret

 - Defendant/Prisoner of Love

 - Charming Deception

I'd really like there to be revenge on the girl by the guy and it'd be nice if she was actually innocent all along. I want there to be angst and romance.

Give me your best recommendations, please! 

If I remember correctly "A Love to Kill" was something along these lines
Forgot to add: I'd also like a happy ending if possible. Thanks ;)
cunning single lady
Sawan Biang
Beyond the Clouds

Innocent Man 
secret
Shark 
Falling for Innocence
Beyond the Clouds
Bad Guy 
Sawan Biang
Jone Plone Jai

prosecutor princess :D