Robyn Donald 
Innocent Mistress, Royal Wife [EPUB ebook] 

Mistress – by royal appointment!Prince Rafiq de Couteveille believes Alexa Considine to be a money-hungry mistress, and using her to avenge his sister’s death will be sheer pleasure… Lexie can’t understand why she’s attracted the attention of the Crown Prince of Moraze – she just wants a quiet holiday.But Rafiq is hard to resist, and soon Lexie finds herself bedded by royalty. But to Rafiq’s horror and shame Lexie is a virgin! Out of duty and honour, he must propose!