Sia shows her face for an "affectionate" date night with her husband ... and guacamole

  • Sia and her husband, Erik Anders Lang, only have eyes for each other.

  • The couple, who exchanged vows in August, enjoyed a quiet romantic dinner on Feb. 3, reports Us Weekly.

  • Lang reportedly treated his wife, 39, who typically refuses to show her face during interviews and performances, to a fancy vegan dinner at The Springs in Los Angeles.