The Never Ending Love Maze

Lianna,A girl who doesn't know she's reincarnated,Gets adopted by the most powerful duke in the capital.Her dry,cold,Tormented heart soon grows to love him. At her social debut,Her sweet dad tells her that she should choose a partner for herself.Lianna knows that she has to make him happy and so,She chooses a contract partner,and tells him that "I won't love you.I do not want children.You may have a mistress." Will her ice heart turn into the only one who loves the Contract partner?