spark of love’s flame
Trollope states that there has been no “spark of love’s flame” shown by Arabella or John Morton. The equation of love and fire has Classical precedent; an example can be found in book 4 of Vergil’s Aeneid: Dido’s passion for Aeneas is equated to a fire growing within her and she becomes consumed. [KS & RR 2012]
Source: Vergil, Aeneid 4.1-2.