Red red roses, not roses of purest black

It appears that the Bouquet of Ebon Roses showers the target with black roses, so you cannot use it to complete Fistful of Love or Flirt With Disaster. However, you can still grab the 11 petals from doing two Gift Giving and completing Zinge's Assessment/Morgan's Discovery. This news makes the Valentine's meta-achievement that little bit more tricky.