Its just a love-song. Deese just singing how she’s crazy about the guy she’s loving. That people are calling her crazy and that she doesn’t want to see the guy with somebody else, etc.
Congolese people of that time liked to get or give old French titles/names from the Middle Age (Sang Bleu, Roi Soleil, Fleur de Lys, etc.). Fleur de Lys is a lily that was often to the French royal family during the Middles Ages era. Until this day some cities in France, Belgium and Quebec in Canada have “fleur de lys” as their coat of arms.