Alright so me , a brand new member of the Star vs. The forces of Evil just watched Face the Music. And I got to say it didn’t give much hope to the Starco shippers with at least 3 more cannon kisses between Marco and Jackie.
But the thing that got me was when Star was walking from the concert.
Look at the way her eyes seem, even though animated are distant and cold. Star is a very emotional person as shown throughout the series. Usually when she smiles it meets her eyes, so for her smile to be so out of place with the look in her eyes it just makes you think that something bad is happening inside of her due to the relationship of Marco and Jackie.
Just after this she goes to cast a spell. And look what comes out of her wand, A GREEN BLAST. Now sure I’m new but I’ve cached up and when a spell it means its dark magic. Now of course Star has used dark magic even without being dark but ever since her evaluation and the comparison between her and Eclipsa, you have to presume that there is something dark inside of her. But here is the thing, What would cause such a dark reaction like this to someone as cheerful as Star? answer; she’s jealous. She walked away when she saw Marco and Jackie kiss during Just Friends, she lied to Marco when he went looking for her. The only explanation to all of this, jealousy. Because let’s all face it, Star is completely and irreversibly in love with Marco. And that just might be her down fall.