From Shojo Manhwa Scans: 631539
A fake engagement with despicable man! Berrie meets her stepbrother Dawson whom she detests so much at her friend's party. A billionaire Dawson, with his still arrogant and domineering attitude, proposed her with an unexpected offer. Which was to act as his "fiance" for a certain amount of time...
1 Volume (Complete)

After reading the summary, I thought this would be a cliche manga with a pathetic female lead that has little or no backbone who is ridiculously in love with an arrogant overrated male. I was expecting an easily predictable plot, characters, and feelings. I've been through many mangas with fake marriages (for one reason or another) and protagonist in denial with communication skills that are severely lacking when it comes to each other. In short I was willing to endure an..... Unremarkable. Predictable. Stupid. Sickening. Love Story.
...And that's what I got... And so will you....
I'm being somewhat harsh though. The stories is short so it's not like you can really get into it (not that I would even if it was 50 volumes or something). Overall it's just a short predictable story. Okay in plot, but nothing memorable or special in any way.