Heather Rae Young Says Fiancé Tarek El Moussa's On-Set Argument With Ex-Wife Christina Haack Has 'Blown Over': 'Everyone's Moving On'

Heather Rae Young insisted there's no bad blood between fiancé Tarek El Moussa and his ex-wife, Christina Haack, after he reportedly lost his cool on his 'Flip or Flop' costar.