Songfacts®:

• "Wildflower" is the fifth track from Billie Eilish's third album, Hit Me Hard and Soft. Soulful and gloomy, it recounts her experience comforting a girl after a difficult breakup.
  
  But plot twist! Feelings blossom, and suddenly Eilish finds herself tangled with that same girl.
• Eilish is haunted by the ghost of her partner's ex.
  
  I see her in the back of my mind all the time
  Feels like a fever, like I'm burning alive, like a sign
  Did I cross the line?
  
  Did she overstep a boundary by getting involved? The song ponders this question, leaving listeners to wonder if there's ever a clean answer in the messy world of relationships.
• The title doesn't appear in the lyrics. Some fans and media outlets suggested it's a nod to a phone case company – "Wildflower Cases" – founded by Devon Lee Carlson. Carlson is the ex-girlfriend of Eilish's now ex-boyfriend, Jesse Rutherford, lead singer of the Neighbourhood.
  
  Eilish and Carlson became close and were photographed holding hands at a Halloween party. The second verse drops a big hint.
  
  I'd never ask who was better
  'Cause she couldn't be
  More different from me
  Happy and free in leather
  
  Carlson is frequently seen wearing leather clothing.
• Finneas, Eilish's brother and musical partner in crime, cooked up a production that channels the soft rock vibes of Fleetwood Mac. It's an apt fit as Fleetwood Mac's discography is filled with songs about love, loss, jealousy, and navigating complicated relationships. "Wildflower" treads similar ground, focusing on feelings of insecurity and navigating a relationship where a past love casts a long shadow.