Just toying with Bernice's character a bit. Re-reading some old stuff I've written, I've noticed that Bernice has a bit of sprinklings to her personalities than just being the sexy femme fetale. She likes movies, has a passion for insects, likes puns - all of which are details apparently Jango & the rest of the harem didn't expect.
I like to think that Bernice is the kind of person who doesn't talk about her own instincts unless its relevant - or someone actively tries to fish it out of her. Like yeah, she knows she's sexy & likes to flirt, but if you bring up how pretty butterflies are, expect her to REALLY pop off on the insect facts.
Maybe this is a rare peak behind her seductive persona, where her & Jango are out on a date to a movie. Being such a big movie fan, Bernice is getting in as much gab as she can before they get into the room. And Jango is just so happy to listen. Because girls that go on about their interests is so cute~