On Our Wedding Night, the Frail Crown Prince Dotes on Me After Our Marriage Swap

[Sweet and satisfying + adored by everyone + true and fake heiresses + her birth family gets what they deserve + male lead is hopelessly in love!] Jiang Lihua's birth parents favored their adopted daughter and married her off to a spoiled playboy. But he later rose to become a powerful minister and cherished his wife above all else. Su Qinghuan, the adopted daughter raised like a princess by the Su family, used Jiang Lihua's birth details to marry the sickly First Prince in a bid to bring him good fortune. People said that after the wedding, she discovered the prince was impotent, so she was a widow in all but name from the moment they married. Before long, she became a real widow, and her mother-in-law, now the empress, tortured her for supposedly taking a lover, eventually having her drowned in a pig cage. Reborn, Su Qinghuan switched their marriages. Jiang Lihua, who had transmigrated into a book, figured that marrying a short-lived man had to be better than marrying a pervert. So she married the impotent First Prince. But why was the supposedly impotent, sickly prince in the book so potent? And why was he always trying to tempt her...? Jiang Lihua often wondered: Had Su Qinghuan married a fake prince in her previous life?