A Libyan businessman, who turned into one of the leaders of the opposition, used a popular dating site to send coded love letters and sow the seeds of the revolution.

It was "for the freedom, not for the marriage," Mahmoudi, the leader of the Ekhtalef ("Difference") Movement, told ABC News.

He resorted to the site in a bid to avoid detection by Libyan secret police, who monitor Facebook and Twitter, and created a Mawada profile called "Where Is Miriam?", pretending to be looking for a wife.

The conservative site doesn't allow men to communicate with other men, so other revolutionaries posed as women to contact him, assuming aliases like "Sweet Butterfly," "Opener of the Mountain," "Girl of the Desert" and "Melody of Torture."

To complete their profiles, they answered the site's boilerplate questions, such as "How much of your face do you cover?" and "Would a shared marriage be acceptable?"

On the site, the revolutionaries used poetry laced with revolutionary references to gauge support and make initial contact. Then they had detailed follow-up conversations via text message and Yahoo Messenger.

The phrase "May your day be full of Jasmine," for example, is a coded reference to what's been called the Jasmine Revolution sweeping the region, Mahmoudi told ABC News.

He said the response, "And the same to you. I hope you will call me" meant they were ready to begin.

If the undercover "lovers" wrote "I want love," it meant "I want liberty," Mahmoudi said.

They also communicated in code the number of their comrades supporting the revolution. The five Ls in the phrase "I LLLLLove you," for example, meant they had five people with them. If a supporter wrote, ""My lady, how I want to climb this wall of silence. I want to tell the story of a million hurts. ... But I am lost in a labyrinth. ... Maybe we can meet on Yahoo messenger," it told the writer to migrate the chat to Yahoo Messenger so as not to raise the suspicion of the monitors, Mahmoudi said.