Makes sense to me, the clues that we know from their talk is that Jade tried to spice things up with Burke, Burke is attracted to Bella and this is obvious since episode 1, and Bella has an inner monologue saying that married woman don't fool around with young students and they she says "They aren't intimate with friends either..but that was
different, it doesn't matter, i've stoped",when MC and Bella were having lunch in the cafeteria Jade and Cathy arrived and Bella left right after Jade starting speaking about the mall incident and we know that Jade can be very dominant, but so does Bella, so maybe Jade tried the same aggressive approach that she used on MC with Bella and that pissed her off, or.... she coerced Bella into doing lewd stuff with her and Burke, using their influence in B&R to do it, even threatening to fire her if she was not on board, and Bella might have agreed and stoped after getting pics or other stuff that could get Jade and Burke into trouble forcing them to leave her alone, or maybe it was an one time thing only but Burke keep persisting with Jade to convince Bella to join them again, and Jade was so jealous and irritated that she get into an argument with Bella,its just a theory of course but now its that time that we have months to theorize until season two starts..