Irish Gypsy (The Riordan Brothers, #3)
Ana Seymour

Seven years later, Eamon once again crosses paths with the bold, beautiful lass when she is hired to tutor his clever, young nephew. He is sure she obtained the postion under false pretenses. After all, what would a wild-spirited gypsy know of sums and schoolbooks? But despite his misgivings, Eamon can't deny that he's falling under her spell—even as it becomes very clear that she has something to hide.