The Latin Lover's Secret Child (The Galvan Brides #3)
Jane Porter

Lucio doesn't know how he'll bear such close proximity to the woman who was once the very air he breathed and who thinks that they were still married, but he knows he'll go through hell if she needs him. As Anabella slowly regains her memory, their love becomes even stronger, but can it withstand Anabella's painful and possibly truthful assertion that the child she bore before they married did not miscarry, but survived?
--from the review by The Romance Readers Connection