After his marriage with Gilla Alpar he lived together with the actress Lida Baarova. A rumor says that Gustav Fröhlich, when he lost Lida Baarova to propaganda minister Joseph Goebbels, he slapped him during a quarrel.
Froehlich was banned from plying his trade for two years (1941-43) after allegedly slapping Nazi propaganda minister Joseph Goebbels in a fit of jealous rage. The ever-roving-eyed Goebbels had been making amorous overtures to Froehlich's then-partner, the actress Lida Baarova. In reality, whether the slap actually happened and only insults were traded is unclear. Nonetheless, the ban stuck.