They created some of the most riveting abstract art of the 20th century, fought Nazis with the gun and the pen, married, divorced and married again. Now the continent-spanning and nigh-forgotten love story of the Burton-Tayloresque couple at the heart of the European avant garde is finally being given its due at a major art institution. And We’ll Never Be Parted, exhibiting at Prague’s Kunsthalle gallery, is the first show to reunite the Norwegian painter Anna-Eva Bergman and German-born Hans Hartung. View image in fullscreen Anna-Eva Bergman in her studio in Paris in 1966. Photograph: Prague Kunsthalle Consisting of 350...