This drama is actually really hilarious. At first it was weird, where the ML+FL relationship was kind of convoluted whereby the FL is fake dating the ML - after gotten dumped by her ex-boyfriend (who refused to get married) - and also going out with the handsome waiter (ML is okay with her dating others); the handsome waiter worked at her ex-boyfriend's cafe; the ML is the best friend of her ex-boyfriend and her ex-boyfriend is trying to get her back, while ex-BF is dating the ML's best friend. And then there is the ex-GF of the ML, who is trying to get pregnant without marriage; she is always around trying to break up the ML + FL relationship.
The ML is asking the FL to be his fake girlfriend in order to stop his domineering mother from pressuring him to get married, and he made a deal with his mother that if she cannot accept the woman he loves, she cannot make him marry others and must give her apartment to him permanent. He knows that his strict mother will never accept the FL as his girlfriend and future wife, because the FL is not the cheebol rich high-class elegant kind of girlfriend. However, in the end, the ML did fall in love with the FL because she is different, exciting and really interesting.
I actually like the ML and FL because they have great chemistry together and their silly constant bickering, hate-like relationship, and funny situations they ended up in. I actually had to rewatch it 2x before I find myself liking the drama. I like the part where the FL trashed the offering trays of the ML's dead father because his extended family dissed and insulted her "low class" parents and status. ... LOL.....
I recommend watching this drama with open mind and just looking for something light and funny to fill your time.