Italian's Secretary Bride by Kim Lawrence

A quiet evening in Manhattan turns into an electrically charged encounter when billionaire tycoon Luca O’Hagan finds himself alone with his brother’s beautiful assistant. The attraction he feels for Alice cannot be ignored; he has to have her.

Alice can’t help falling for the powerful and sexy Luca. Yet when he proposes a marriage of convenience, she refuses, knowing she doesn’t have his love. But perhaps she’s been too hasty — she’s just discovered she’s having his child!