jinnborn:
First one that came to my mind is Behind your smile, I think it's like what you want.
Blade man (didn't like it, but similar to your description)
Love never forgetting (The guy is cold with messed up life and personality, hate the female at beginning, then fall for her and after that he was confused for a while , then he starts pursuing the girl)
I know that I started Behind Your Smile, then dropped it, then put it on hold and now I don't even remember the last ep I watched XD Might give it another go, we'll see.
Blade Man doesn't sound like sth I'd like.
Love Never Forgetting - I dislike the main actor, we'll see about it.
Thanks! :)