Who is the fake Jellal?
Sub-Zero Emperor Lyon arc Jellal (as Siegrain) is revealed to have been the one who set the events on Galuna Island in motion by sending Ultear, under the disguise of “Zalty”, to use Lyon Vastia to revive the Demon Deliora so that he can control it.
Why did jellal lie about having a fiancée?
His love interest is Erza, but when he was about to kiss her, he lied that he had a fiance because he changed his mind last moment about kissing her(he wasn’t ready or something) and felt uncomfortable so close to Erza.