Tim Tebow Surprises Teen Florida Gators Fan Fighting Leukemia at Hospital

The 13-year-old Florida Gators super-fan was left speechless and in tears.

"What's up?" Tebow, 28, says in the video. "Can I get a hug?"

Nelson is left speechless, but he gives Tebow a hug before beginning to laugh and cry at the same time, the video shows.

"I've heard so much about you," Tebow then says in the video. "I've probably had 15 people contacting me and telling me about you and how awesome you are and how so many people are praying for you, so I said, 'I just have to go and see him.'"

Nelson then wipes his tears, still laughing, before managing to finally say, "Wow."

Footage of Nelson and Tebow's emotional meeting was viewed over 4.4 million times on the Tim Tebow Foundation's Facebook page as of this afternoon.

Nelson was diagnosed with acute myelogenous leukemia (AML) last month, but he has maintained an "incredible, kind spirit" and hopes to recover, attend the University of Florida and become a scientist to cure cancer, Dellenback said.

The Gators fan has two giant maps in his hospital room -- one of the world and one of the United States -- marked up with the places where people are praying for Nelson, Dellenback added.