Justin Bieber stopped by Ariana Grande's concert in Miami this weekend to join her onstage... but he didn't have enough time to learn the lyrics to "Love Me Harder." Whoops! Do you think this was just a simple mistake anyone could make, or is Bieber just the WORST? Subscribe for more videos! http://full.sc/NfhdwD <br /> <br />Justin Bieber Flubs Ariana Grande Lyrics: https://www.youtube.com/watch?v=GyrCBZmDOHM <br />Justin Bieber and Ariana Grande Live in Miami: https://www.youtube.com/watch?v=Adq7eY-mnkc <br /> <br />Let us know your favorite videos of the day in the comments! If we make a video based on your suggestion, we'll mention your name on a future episode! <br /> <br />Follow us on Twitter for real-time updates! <br />http://www.twitter.com/whatstrending <br /> <br />Like us on Facebook! <br />http://www.facebook.com/WhatsTrending <br /> <br />Add us to your circles on Google+! <br />https://plus.google.com/+WhatsTrending <br /> <br />Sign up to our newsletter for the hottest videos straight to your inbox! <br />http://bit.ly/wtnewsletter <br /> <br />Follow our host! <br />Hayley Hoover: http://www.twitter.com/hayleyghoover <br /> <br />Edited by Alex Jones
