Demi Lovato celebrating her birthday with boyfriend with Wilmer at Knott’s Berry Farm in Buena Park on August 22, 2015. Looks like fun! Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Google+ (Opens in new window) 0 comment 0 Facebook Twitter Google + Pinterest previous post Demi Lovato’s Upcoming Single ‘Confident’ Will Impact Radio on September next post Iggy Azalea Has Confirmed The Duet Track With Demi Lovato Titled ‘Kingdom Come’! Leave a Comment Cancel Reply Notify me of follow-up comments by email. Notify me of new posts by email.