Dj Diplo, whom Katy was linked to last year, tweeted that he was "Team Katy Perry" before the show and after the epic performance, he joked that she won the Super Bowl.
Her ex husband, Russell Brand also tweeted his support for Katy before her big moment:
Unfortunately, it sounds like Katy wasn't too thrilled to have Rusty Rockets rooting for her...at least not in such a public way.
Super Bowl may be baffling to Brits but half time show will be amazing. Good luck KP- Russell Brand (@rustyrockets) February 1, 2015
According to The Sun (via The Daily Mirror), Katy was not happy that her ex husband involved himself when it was her time to shine.
"She couldn't believe he'd say that after everything he put her through," a source told them. "This was the man who, quite literally, destroyed her heart. He slagged her off publicly around the world...Then on the biggest night of her life professionally, he could not resist involving himself."
Wow, we hadn't even thought of it that way, but Katy did say that the breakup really took a serious emotional toll on her, so we can understand why that's the last thing she would want to be thinking about on such an important day in her career.