Marriage, not dating, is one of these trash dramas. The story is not very original, the acting average, and the budged rather little. But god, that was addictive. I couldn't stop watching the series and finished it in an unhealthy amount of time.
I think this is mostly due to the cliffhangers in the ending of each episode and the insanely funny story line.

The story:
Joo Jang Mi (Han Groo) is madly in love with her boyfriends she has been dating over a year now and wants to get married. Since her boyfriend Lee Hoon Dong does not show any motion to propose, she decides to do it herself. Lee Hoon Dong owns a restaurant and loves being a playboy. The last thing he wants is getting married, and he wants to break up with his girlfriend. However, he is a sissy, not able to speak up right away and instead of telling Joo Jang Mi that he is not interested any more, he gets his best friend Gong Ki Tae (Yeon Woo Jin) to distract her. Lee Hoon Dong starts ghosting Joo Jang Mi and tells inaccurate stories about her stalking him. Joo Jang Mi first does not understand that her boyfriend broke up with her, because he simply didn't, but as she realizes she gets furious and wants Lee Hoon Dong to act like a grown man. Gong Ki Tae gets over time involved in their fights and ends up making a deal with Joo Jang Mi. Gong Ki Tae also does not want to get married, but his mother pressures him to do so. Joo Jang Mi is supposed to pretend to be his girlfriend and misbehave at her home to terrorize his mother. On the other hand, she gets the chance to make her ex-boyfriend jealous.

The characters:
Joo Jang Mi is your typical poor drama girl who likes to drink, is clumsy and speaks without thinking beforehand, but she was quite likeable.
Gong Ki Tae is a rich plastic surgeon from a good family, rather cold-hearted and bored from life.
Both of course with a childhood trauma. They are making a good pair, tho.
The side characters all evolve around making the main couple "break up". We have the ex-boyfriend, an ex-girlfriend, a second lead and a best friend... that yeah, see yourself :D.

All this sounds pretty generic, but the show has good jokes, funny and heart-warming scenes and many clichés. As a change up, I really loved it, and I will definitely rewatch it sometime. The show had a lot of twists and cliffhangers which will keep you going even if you cringe sometimes.
I recommend it to you if you something light-hearted for in-between. From the vibe it gives you, I would compare it to the heirs, maybe. Not from the storyline or anything, just from the feeling.

If you have further questions, I'm here to answer them :)

What bothered me was that they slept in their street cloth quite often, like eww.