In a typical con, the perpetrator will spend weeks or even months building up a romantic relationship with a victim through e-mails, texts or phone calls, before eventually asking for money.
And many of the scammers aren't even in the United States.
"In the process of going back and forth, a scammer is going to try to figure out what makes a person tick, what their vulnerable spots are," said Jenny Shearer, an FBI spokeswoman.
"Because a victim has legitimate feelings, they might be inclined to offer financial support for this person." For Best, it all started when she signed up for a free online dating site called mingle2.
At first, Best -- who juggles two part-time jobs working with developmentally-disabled adults and people with mental illness -- resisted, telling John she simply didn't have the money. "He was trying to get me to use my credit cards, borrow from my friends and family," said Best, who earlier told her saga to The Huffington Post.
When he told her days later he couldn't afford to eat, Best gave in, wiring him two 0 payments. soldiers serving abroad, then ask for money to purchase laptops, international phones or a plane ticket home so their fake relationship can continue. Army's Criminal Investigation Command says they receive hundreds of reports every month from people fooled by phony service members.
"I left my heart out there, and this guy took advantage of it," the 51-year old Best said.In 2011, the FBI's Internet Crime Complaint Center received 5,600 complaints from victims of so-called "romance scammers" -- criminals who scan online dating sites, chat rooms and social networking sites for potential victims.