Mistress: Pregnant by the Spanish Billionaire (Harlequin Presents)

Library assistant Nell Frost is on a mission to be more confident. Arriving at Luiz Santoro's magnificent Spanish mansion, she's determined to tell him what she thinks of him seducing her niece—and then leave. But Nell has underestimated the powerful Spaniard....

Luiz knows Nell has the wrong man. But this young virgin, dressed in shapeless clothes, could have her uses. He has a vacancy for a temporary mistress—with two conditions: no marriage, no children!

But soon Nell has broken all the rules....