Surrender to the Sheikh, Series by Susan Stephens

Forced to marry...a sheikh! One passionate night was all it took! Now Lucy is the mother of Sheikh Kahlil's son. If their baby is to inherit the kingdom of Abadan, Kahlil insists that Lucy must marry him! Lucy is both appalled by the idea of a temporary marriage to the arrogant Sheikh--and unable to deny her desire to share Kahlil's bed again. But unless she can change Kahlil's mind, after six months, she'll no longer be his captive bride....

Zara Kingston has gone to the desert city of Zaddara to confront the man she blames for her troubled past. But when, during a sandstorm, she's protected by a dark stranger, she finds that the desert holds hidden treasures. Zara soon realizes that the man she yearns for is Sheikh Shahin--the thief of her happiness Shahin knows that Zara is a virgin--forbidden, no matter how strong his desire. But it's forbidden fruit that tastes the sweetest... .