By Meghan Overdeep
Updated Feb 16, 2016 @ 9:00 am
Ryan Reynolds
Credit: Peter Kramer/Bravo/NBCU/Getty Images

For 13-year-old Connor McGrath, Ryan Reynolds doesn't just play a hero, he is one.

The Deadpool actor recently took to Facebook to lend his support to the teen, who is currently being treated for an advanced form of leukemia in Edmonton, Alberta, Canada. According to Reynolds, McGrath is "quite possibly the biggest Deadpool fan on earth," a title that earned the youngster the honor of being the first member of the public to see the Deadpool film.

"About 6 weeks ago, I traveled to Edmonton, Alberta, to show Connor the movie at his hospital. Of course, Deadpool was right up his alley because Connor's the funniest, potty-mouthed Canadian mercenary I've ever met," Reynolds wrote in the touching post (below), which included a photo of the two of them.

Just like Reynolds's Deadpool character, Wade Wilson, McGrath is trying to put cancer in his rearview mirror, the actor went on to write.

"He's my friend. I know lots of celebrities jump up and down touting a cause—and maybe I'm no different. But holy frozen s—-slivers, I love this kid. He's the GREATEST. And he needs your help to get well. I've donated to help Connor and I hope you will too."

So far donors have contributed $35,522 to his family's $800,000 goal.