I started watching a Korean drama about 2 years ago that I know want to finish watching but I can no longer remember the name of the show. the parts of the drama I remember involved a couple that had broken up and had meet new people who turned out to be related to each other. the female lead broke up with the male lead b/c he simply did not have a steady job. The male lead that was dumped by the female lead meet his new partner working as a replacement driver. also if I remember correctly the intro scene to the drama involved the male lead singing a marriage proposal as a favor to a friend. 

I managed to find the name of the drama by doing a show by show search on viki. It's called "A Little Love Never Hurts" it's a 50 episode romance, family drama. 
I was actually curious myself and kind of want to watch it know. Thanks for replying back with your answer.