Is It a Fortune or Is It a Woe? is a Manga/Manhwa/Manhua in english language, Drama series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.nl fastest updating comic site. The Summary is

Somehow, before the appearance of the female lead, I became the male lead’s temporary wife. Since things had already turned out this way, I decided to try my very best. However… “It’s so fortunate that someone like you became Cedric’s partner.” “… I’ll admit it. It’s a fortune that you were the one to become his wife, Dylan.” “It’s such a fortunate chance that you were the one to become the Lady of the Brighton House.” … I think I did too much of a good job. When Cedric’s destined partner arrives, I will have to leave. What should I do? To someone like that, Cedric had said this. “Would you have ever thought that the one I would fall in love with would be you?” …Would you still say the same to me after the real female lead, Adeline, makes her appearance?