A source tells PEOPLE that Katy Perry and Orlando Bloom's relationship is "pretty much done," while another says the singer is "happy and just focused on her tour."

After rumors emerged this week that Katy Perry may be headed for splitsville with fiancé Orlando Bloom, the singer is adding fuel to the fire. While introducing her song “I’m Still Breathing” at a recent tour stop in Sydney,

Katy Perry and Orlando Bloom are growing apart as career setbacks and emotional distance put their relationship at risk.