Complex sentence: The model for Venus was Marie Georgine, princess of Ligne.She was on a short holiday in Paris (1861) with her boyfriend.They modelled for his "Abduction of Psyche" and "Flora and Zephyr".
Split into simpler sentences: The model for Venus was Marie Georgine, princess of Ligne. Together, they modelled for his "Abduction of Psyche" and "Flora and Zephyr".