Unpopular Deltarune opinion: I don’t think Kris has a crush on anyone. Kris being upset about Susie and Noelle may parallel how they felt about Asriel and Dess. As a kid, Kris threw dirt at Dess while she and Asriel were on the Ferris wheel. Possibly because Kris felt Dess was taking Asriel away.
Now Kris finally has a close new friend, and Noelle’s relationship with Susie may trigger that same fear of being left behind. That doesn’t necessarily make it romantic. No hate to shippers though, I just read it differently.













