Billionaire Prince, Pregnant Mistress (The Royal House of Karedes, #1)

"Aspiring jewelry designer Maria Santos, proud but poor, has come to Aristo to win a royal commission. Cold, calculating Prince Alexandros Karedes masterfully beds Maria, thinking she's only sleeping with him to save her business. So when Alexandros discovers Maria is pregnant, he assumes it's on purpose. She'll never be a suitable wife - but she's perfect mistress material. What will it take for this billionaire prince to realize he's falling for his pregnant mistress?"--FantasticFiction.com