"that s my affair" in German That's my affair. Das ist meine Sache. Detailed translations for "that s my affair" That's my affair. That's my affair. Das ist meine Sache. - That's my affair. Source: opensubtitles.org Corpus by OPUS Request review - Das ist meine Sache. That's my affair. Source: opensubtitles.org Corpus by OPUS Request review Das ist meine Sache.