Shawn Mendes seemingly addresses his rumored love triangle with Sabrina Carpenter and Camila Cabello on John Mayer’s SiriusXM show, ‘How’s Life.’ The singer says while he was dating ‘someone,’ he reunited with an ex-girlfriend due to some ‘unresolved feelings.’ Last year, Camila was spotted kissing Shawn at Coachella weeks after he was rumored to be dating Sabrina.