If he'd wanted Star to know he'd kept up the show when she appeared at the procedure, but instead he straight up told her he doesn't think it's gonna be dangerous -for him- and also engaged in a petty argument telling her to go away pissing them both off. This doesn't match with the silly >it was a manipulative ploy of 4d chess and he intended for Pony to tell Star all along
headcanon some anons in denial have cooked up.
But no matter what you simply refuse to accept canon: that Tom's not the evil manipulator you thought, or that Star legit chose him over Marco even after finding out that Marco's single now and followed her to Mewni. No, Star can't make a choice like that because it's not CUTE AND PERFECT and she's supposed to be crushing on Marco and run into his arms the moment he's available, right? So the only explanation HAS to be that Tom's somehow manipulating her.
So you're duping yourself about not just Tom, but also Star. Sad. But keep clinging on to your delusions, maybe they bring you comfort.