When He Found Out This Homeless Woman's Secret Over Lunch, He Was Crushed. So He Took Action.

"You never know what you can do for someone until you try."

The story of a 25-year-old Florida man teaching a homeless woman how to read resulted in a campaign that might change her life long-term.

Greg Smith, the founder of Hybrid Athletics, says people who are homeless often ask him for money when he is in Downtown Orlando. However, a local named Amy Joe merely wishes him a "good morning."

Touched by Amy Joe's friendliness, Smith treats her to lunch every Tuesday. Two weeks ago, while eating together, Amy Joe told Smith that she is illiterate.

"She told me how hard it was for her to find work not being able to read," he wrote in an April 26 Facebook post. "She began to tell me any money that she can collect she uses to check out library books that help with learning to read instead of buying food. This crushed me."

In addition to lunch every Tuesday, Smith is now providing Amy Joe with reading lessons. He borrows a book from the library and reads it with her during lunch. Then she practices with the book during the week.

"I wanted to share this because maybe this can lead to someone helping another person," he wrote on Facebook. "There are a lot of people out there like Amy Joe, not all are hungry, homeless, or hurt. Some could be your family or friends. Helping someone could be as easy as saying hello and smiling."

After his story on Facebook went viral, Smith started a crowdfunding campaign to raise money for Amy Joe. The campaign has received more than $5,000 in donations since last week.

"I wanted to let everyone know that Amy Joe will be spending some time in a hotel downtown while we are finding a more adequate living space," Smith wrote in a May 2 Facebook post. "The donations are going to food, clothing, a library card, and much more to help the less fortunate in the Downtown Orlando area."

Smith hopes to expand his charitable efforts to other people who need assistance.

"I want to be able to help anybody, whether it be giving them some food or clothes," Smith told ABC News. "I don't want to just narrow it down to helping people read, because there's so many other people that need more help."