Girlfailures are fun. Years ago on /v/, I wrote an extensive, angsty Greentext where Sae from Persona 5 was a hopeless horny spinster who fell into lust with her sister's boyfriend, eventually culminating in a passionate, messy affair; various erotic threads which got me banned multiple times
Anyway, when I look at Fiona in this picture I see the same thing. It's kind of fun imagining a similar scenario. Jealously is such a potent, visceral emotion that's so much fun to write— especially from a woman's POV