Korean Romantic Thriller Movies...?

I've been seriously in the mood for a good romantic thriller, but they seem really hard to come by. I don't know why.. If you know of any good movies in this genre, please recommend them to me! I need something to get me through having to wait for the next episodes of K2 to come out.. It's been really painful. TT^TT

As far as movies go, you are right its a hard genre combo to pin down.

Spellbound is a horror/romance......but you could probably tie it to more of a thriller.
The Con Artists could fit into that category.  Though the romance isn't a main focus.
The Flu to a degree.  Though the romance isn't a main focus.
Haeundae
Catch Me is more of a crime/romance and Con artists I guess the same.


If you want dramas, let me know, as that is probably my favorite combo for them and I should have a few.

@Dreamwalker: Thank you! I think I will pick up Catch Me and possibly Haeundae as I haven't seen those ones (they have been in my PTW list for some time, so it's probably time to give them a try). Also, Spellbound is seriously one of my fav movies!~ ^^ 

Okay, thanks! I would love to know what you recommend for dramas of this genre, so if you could, that'd be awesome.

Ghost in your arms again is what I can think of by now :)