El Juramento de un Libertino = A Rake's Vow (Zeta Romantica #238) (Paperback)
Vane Cynster never wanted to be attached to any woman, but when he meets Patience Debbington he realizes that he has found his perfect match. The desire for seduction is born into his mind. Patienceis unwilling to succumb to Vane's sensuous propositions. His kisses leave her stunned, his caresses make her melt, but he is an arrogant man, arrogant and unfaithful, like any other.