I've been trying to look for this story but I really cannot find it.    Tiffany is a rich heiress and she gets into a marriage with taeyeon who she doesn't like. She treats taeyeon like trash and while they were together taeyeon loses her memories and Tiffany pretends that taeyeon is her maid. Tiffany also reconciled with her ex boyfriend but later falls for taeyeon.  seolhyun tries to break them up later and nearly succeeds but Tiffany becomes pregnant with taeyeon a child an