This is Quo Vadis, referring not to the biblical references of Jesus, but to Petronius and Eunice of 'the narrative of the time of Nero' by Henryk Sienkiewicz (any ancestral relation to Bill?), who received a Nobel Prize for literature in 1905.
Eunice is a fictitious household slave who has fallen in love with her master, though he learns of her devotion at the moment portrayed here.
Alphonse Mucha — Quo Vadis — 1902