Over the last five or so years, “sad-girl pop” has become a catch-all for female singers who blend their confessional songwriting — often steeped in heartache, anxiety and introspection ...

There is a “sad girl” category, but suspiciously no “sad boy” category to counter it. Rolling Stone put out a readers’ poll of “The 10 Saddest Songs of All Time” in 2013.

As a biopic of the Grammy-winning, then not-Grammy winning dance pop duo Milli Vanilli, “Girl You Know It’s True” suggests the story you thought you knew is not real.