The title my be a little it of an exaggeration but Mouse (Ellen Wong) does get a potential love interest. According to tvguide's interview with EP Amy B.:
Mouse is about to bump into somebody who is both competition and a potential love interest in a fellow student. Her journey takes a surprising twist. Some of the choices she made with Seth are going to come back to haunt her.
Who do you think this potential is? Comment below! But it's definitely not Sebastian (Austin Butler) he and Carrie are back together!