how did desiree and armand met and fell in love

Armand Aubigny all of a sudden falls in love with Desiree when he sees her standing against the stone pillar, even though they knew each other since they were small children, ever since Armand and his father came from Paris, after his mother died. Monsieur Valmonde proposes that before their relationship becomes more serious, Desiree’s origin should be examined. However, Armand is so in love that he does not care about Desiree’s ancestors and decides it does not matter that she does not have a family name of her own, if he can give her a perfectly good one, and so they get married.