Book 1 in Anita Mills' "The Rivaux Series" aka "The Fire Series".
Born Eleanor of Nantes, beautiful young "Lea" was the most passionately pursued prize in Normandy. Her beauty, intelligence, and grace incited envy and acrimony between the greatest warriors of her time. Robert of Belesme, ruthless and evil, would stop at nothing to have her. Prince Henry, son of William the Conqueror, wanted to share her bed. But it was Roger FitzGilbert to whom she gave her heart ... every law of God and man forbid her to have him.
Roger de Brione pledged himself to Eleanor as her champion..vowing always to protect her. Two lovers fighting their raging desires until they surrender to feelings that swept away the barriers. She could feel his racing heart and hear her own heavy breathing beneath him...as he brushed her lips softly and whispered, "Heaven -- Lea, you have give me heaven..."