What Shawn Mendes and Camila Cabello's PDA Says About Their Relationship (Exclusive) | The Downlow(d)

On this edition of ET Live's 'The Downlow(d),' Shawn Mendes and Camila Cabello stun the internet with the sloppy makeout they posted on Instagram. Body language expert Blanca Cobb weighs in on Shawmila's biggest PDA moments and what those say about their relationship. Plus, Camila drops a new video for her latest single, 'Liar.'