Since you seem to be more into romance dramas, you can try : Queen in Hyun's Man Secret garden Sorry I love you The greatest love The Princess' man
Try City hunter (my favorite drama ever) School 2013 sweet story and b romance Haeundae lovers
The best Korean dramas that I have seen are 49 Days and White Christmas.
These are the dramas I liked the most: Bridal Mask City hunter Innocent Man Gu familly book Secret Garden Ghost Chuno Iris Ojakgyo Brothers
Thank you very much , i think i won't have to searsh for a new drama for a looong time !!
If you want bromance: School 2013 -> http://mydramalist.com/korean-drama/5571/school-5
If you want melodrama: Innocent Man -> http://mydramalist.com/korean-drama/4295/nice-guy
If you want comedy + romance: Reply 1997 -> http://mydramalist.com/korean-drama/4689/answer-to-1997
If you want action + romance: Time between dog and wolf: http://mydramalist.com/korean-drama/291/time-between-dog-and-wolf
If you want mystery: White Christmas -> http://mydramalist.com/korean-drama/1460/white-christmas

AND (a very good drama, and there is L from infinite) Shut up: Flower Boy Band -> http://mydramalist.com/korean-drama/3132/shut-up-flower-boy-band

// plz don't try City Hunter if you can't stand political dramas !!
Well, I haven't watched too many drama eather but.. I would say that Ma boy is so cute minidrama, just 3 episodes but worth to watch ^^ And Oh! My lady is pretty good, too ~
For first drama, I'd recommend these if you like action and mystery with your love story... Sungkyunkwan Scandal City Hunter If you like comedy with your love story... Goong/Princess Hours Any of the Flowerboy Series Soulmate The Woman Who Still Wants to Marry If you like just romance in your love story.... Que Sera, Sera Queen In-Hyun's Man The Princess' Man
Dream High Faith My Girlfriend is a Gumiho 49 Days City Hunter
Boys Before Flowers Hong Gil Dong IRYS Time Between Dog and Wolf You are Beautiful 49 Days A Thousand Kisses Athena Faith Secret Garden The Snow Queen
King2Hearts Queen In Hyun's Man