Very Ordinary Couple came out in 2013 and stars Lee Minki and Kim Minhee!
It's a romantic comedy about, guess what, a very ordinary couple.
It really differs from a K-drama because the way the couple is presented is so normal - it wasn't love at first sight, there aren't crazy illnesses and family issues tearing them apart, etc. They're just two ordinary people going through their ordinary lives trying to make a relationship work.
The movie starts off with our two characters already broken up, but since they work together and have to see each other every day they start to fall for each other again.
The film really starts with them restarting their relationship, and we watch them make the same mistakes all over again.
Since Minki is in it you know there are scenes of him just being ridiculously and naturally funny - and there are a bunch of scenes that will make you cry.
Basically, this movie can teach you a lot about making relationships work and how even really, really "ordinary" love can mean something huge.