Demi Lovato called out Perez Hilton for bullying. Or at least, that's what Perez thinks.Let's back it up a little.This is Demi Lovato. She's a singer and actor who got her start on the Disney Channel.https://www.instagram.com/p/Bfq-OOFFQ3-/?taken-by=ddlovatoThis is Perez Hilton, a celebrity gossip blogger who rebranded himself as a nice dad. He's also super into sharks, apparently. View this post on Instagram Such a fun time at @CirqueDuSoleil's annual #OneNightForOneDrop gala last night! Check out my Instagram Story or Highlight for videos from the event!!! A post shared by 🧿 Perez Hilton 🧿 (@theperezhilton) on Mar 3, 2018 at 2:00pm PSTOn Monday, Lovato tweeted about singing her hit song "Sorry Not Sorry" (referred to in the tweet as simply "SNS) to "one of USA's most notorious bullies."The other night I got to sing SNS directly to one of USA’s most notorious bullies. It felt so fucking great. That’s what the song is all about!!! Sorry not sorry that you were in the audience watching me kill it. 🤷🏻♀️— Demi Lovato (@ddlovato) March 6, 2018 After much speculation about who the mystery bully could be, Lovato tweeted that he shall remain nameless...."because he doesn't deserve the relevance that he doesn't have anymore."And btw - he’s remaining nameless because he doesn’t deserve the relevance that he doesn’t have anymore— Demi Lovato (@ddlovato) March 6, 2018 Ya burnt. giphyNow Perez, who was at the concert, thinks that he's the notorious bully (you're so vain, you probably think this tweet was about you?).@DDLovato claims to be an anti-bullying activist. But she sure is coming across like a bully to me! This is my response to her tweets against me! Watch this video in full HERE: https://t.co/lxqX65aEik pic.twitter.com/xFnJgDWRDZ— Perez (@ThePerezHilton) March 6, 2018 He WAS at the concert. View this post on Instagram I saw #DemiLovato in concert this weekend. And here are my honest thoughts! Plus, everything #Oscars! AND all of today's hottest topics! #SwipeUP on this teaser in my Instagram Story or Highlight to watch this video in full or view it on my @PerezHilton YouTube channel at YouTube.com/PerezHilton or directly at this link HERE: https://goo.gl/8apfGr A post shared by 🧿 Perez Hilton 🧿 (@theperezhilton) on Mar 5, 2018 at 8:00pm PST "Previously, I thought she was just okay live, and that’s because she was giving more of a rock show. But now, she finally got dancers, and that really brought a lot more of a pop show element to Demi’s live experience," he said in his review. "I have nothing bad to say."The two have previously clashed over DM, when Lovato told the blogger to "let it go already" liking tweets about an alleged feud between her and Mariah Carey.Here are the receipts. xoxo https://t.co/PAzYxsR3Ko pic.twitter.com/pyv3770B1q— Perez (@ThePerezHilton) July 25, 2016 For what it's worth, fans agree that Perez is the mystery bully. Perez hilton is over — Carlos Figueredo (@carsperi) March 6, 2018 pic.twitter.com/jU54SqoGKx — bea🐶 (@thisisbeatrix) March 6, 2018 QUEEN ENDING PERAT pic.twitter.com/qo9JQ3xksT — TMYLM (@demiIovatoast) March 6, 2018 SPILL THAT NAME SIS!!! PEREZ HILTON PEREZ HILTON PEREZ HILTON PEREZ HILTON PEREZ HILTON PEREZ HILTON PEREZ HILTON PEREZ HILTON PEREZ HILTON PEREZ HILTON PEREZ HILTON PEREZ HILTON PEREZ HILTON PEREZ HILTON PEREZ HILTON PEREZ HILTON PEREZ HILTON PEREZ HILTON PEREZ pic.twitter.com/8MesrO5FIs — ken 40 (@wrotelovato) March 6, 2018 so you talkin about perez hilton pic.twitter.com/C0J1agNH30 — andrea (@sydneysleroux) March 6, 2018 RIP Perez.