I like Star, she's one of my top waifus, but I think marco and Jackie deserve a chance to be together and explore their relationship. As marco said before she put Jackie in a pedestal wich is something common to apply to your crush, as an unreachable perfect girl, but it's time for Marco to get to know Jackie for who she is not for who he thinks she is. Maybe he may not like her but remain as good friends, or maybe they'll click and stay together. They handled the crush aspect surprisingly savvy instead of going through a more standard tropes route, so I can't wait to see how that develops.
Now on star side, I don't think she'll act as a jelly bestie but it'll get interesting.
Also, what's not to love about Jackie, those legs, those hips...
Finally, is Jackie multiracial? Her skin tone is certainly a bit darker than star's but not as brown as Marco's. Probably a bit of Latino genes, black genes (booty) and white genes