He drinks from Katy Perry mugs, his wall is completely covered with Katy Perry pictures, he buys two copies of every Katy Perry magazine*, and he likes Katy Perry more than he likes his own family. Congratulations, Jack Moore — you are most definitely Katy Perry's #1 fan. Check out all of Moore's Katy Perry collectibles in this mini-documentary that chronicles his obsession with the pop star.
* To be fair, I knew plenty of girls who would buy two copies of a magazine (including my teenage self): one for keeps, and one to cut up and paste all over your bedroom wall. I'm looking at you, 1999 special edition magazine entirely dedicated to NSYNC.