Rosa was married off to a billionaire Clark after the death of her father. He married her out of pity because her father has done a business with him before and there was a level of familiarity between Clark and her father. Rosa relented but her mother was like the force against her wish of not getting married to Clark. Clark wasn’t treating her well as a husband should and he’s PA who seemed to like Rosa came into the picture and Rosa started to become comfortable with him under Clarks nose.