Pretty sure before they were love bombed they would've bent over backwards to suck Hitler off.

Sure, but they're not going to teach that to you in English grade school during the 1980s.

Maybe it was just the first widely documented (in glorious black and white photography) abusive relationship between two deeply in love countries?

England's biggest beef against Germany was that the Germans got to do Trans-European colonialist empire building during the 1930s/40s while the English commitment to right-wing economic policy left them shitting in their own bed for 30 years.