@JkCaster I think she's just being childish, which is understandable as far as I'm concerned since she's still a teenager with next to zero love experience. Unlike the adult women in Reiji's life she's SUPPOSED to still have room to grow as a person.
Meanwhile, Reiji, dude, if she's already jealous about the one girl you slept with of course she's not gonna stay in the mood after you bring up the other one, you moron. You absolute melon.
Also I know Sensei's hot but this god complex of hers is scary. She's clearly the most dangerous person in his life right now besides maybe the gay guy.