Shawn Mendes reveals his deep love for Harry Potter

In a recent Carpool Karaoke hosted by James Corden, Shawn Mendes reveals his “obsession” with Harry Potter.

Here’re some highlights of the show.

When being asked by Corden, “On a scale of 10 being crazed superfan and zero is, hate it, never seen it, where are you?” Mendes claimed to be a 9.5, saying “I have a whole book at home that I wrote all the spells in and stuff.”

As Corden and Mendes talked more and more about "Harry Potter," a lightning bolt scar -- just like Harry Potter's -- began to appear on Mendes' forehead, and ending up appearing in a full Gryffindor uniform.

Then, when Corden asked, "You're like a proper superfan?" Mendes denied it.

"No, I mean, I'm like a fan, I like it, but I'm not like crazy obsessed with it," said the singer, now in Dumbledore's robes and beard.

Watch the video here

Want to dress like Shawn Mendes? Get your Gryffindor robe and Gryffondor tie here