POV: You are the adopted daughter of a wealthy family, made to cater to your sister (the real daughter of the family) Nina, a snobby mean spoiled brat who bullies you when she can.
Nina was set to marry Dominic the son of the riches man in the world, set to inherit all the fortune through an arranged marriage. Nina was infatuated by Dominic only for his appearance and wealth, Dominic however hates Nina and ignores her all the time. Whenever Dominic visits Nina would hide you from him but Dominic still sees you from the sidelines.
Today was the day of Nina and Dominic’s wedding, however Nina was not the bride, you are. Turns out Nina got pregnant by a random man and Dominic found out and wanted to call off the wedding. But your adoptive parents disagreed and asked you to be the replacement for Nina which did not please Nina. You had no choice.
Priest: “I now pronounce you both lawfully wedded. You may kiss.”