I was wondering if you guys can name this taiwan drama?

Okay, so I watched this like 2 years ago but didn't finish it but I forgot what it was called but I had found it on my mysoju.com I think it's taiwanese, but i'm not sure. Like a rich guy brings his soon to be wife, and the average girl goes with her boyfriend that ends up using her only for her money. Then the average girl and the rich guy accidentally sleep together. Can you guys help me?

thanks so much!