Based on in-game emotes I conclude that Vi is the girlfriend who knows all the sick moves while Cait actually can't dance to save her life.
Bonus:
Sure but they have to start breakdancing together
New concept for if Sora and Riku ever go to a ball at Castle of Dreams: Cinderella’s step sisters or some random duo of girls try fighting over seeing Riku first by grabbing at his arms, mistaking him as a prince or something while Riku glances at Sora nervously and Sora responds by walking over with “Your majesty!” and joke bows before getting between the girls and saying the prince has already got a dance partner before they take to the dance floor.
Now that break dancing is in the Olympics, I need a step it up movie where they have to compete and win the Olympics to save their underfunded dance studio