The couple was already going through what Greer's attorney described as an amicable divorce.
After learning of the affair, Greer's wife asked for a $300,000 divorce settlement in addition to child support, said Kennitra Foote, Greer's attorney.
"That thank-you note is going to cost him money," Foote said.
Greer asked for $1 million for breach of contract and deceptive trade practices.
A 1-800-Flowers spokesman said the company does not comment on pending litigation. In a statement, spokesman Steven Jarmon said, "We take all matters relating to our customers seriously; however, we are not responsible for an individual's personal conduct."
When newspaper reader Keith Hempstead found out that the Raleigh News & Observer was cutting its staff and its coverage, he didn't just get mad. He filed a lawsuit.
Hempstead, a real estate lawyer in Durham, N.C. and former newspaper reporter, claimed that the paper cheated him and other subscribers by changing its coverage after they signed up for service.
"I'm not doing it out of spite, I'm doing it because I still love the newspaper," Hempstead said last year.
His suit complained that fewer sections, thinner newspapers, and fewer newsroom staff are "changes that will substantially reduce the quality to what it is currently."
"I wanted to get the newspaper's attention," said Hempstead, "because I knew canceling my subscription wasn't going to hurt them."
The publisher of The News & Observer, Orage Quarles, dismissed the validity of the lawsuit.
"My response is pretty simple," Quarles said in an e-mail sent last year to ABC News. "We think it's a frivolous lawsuit and believe the judge will see it that way too."
Scott Anthony Gomez apparently found it a little too easy to escape from the Pueblo County jail.
He escaped once in 2006. When he was caught, he warned prison officials that "there were many ways to get out of the facility," according to the Los Angeles Times.
When he set out to escape again, he fell as he tried to rappel down the side of the building using bedsheets.
He sued the local sheriff, saying authorities caused his injuries by making it too easy to escape.
"Defendants . . . did next to nothing to ensure that the jail was secure and the plaintiff could not escape," says Gomez's lawsuit, according to the Times.
Last year, a judge ordered him to pay $66,000 in restitution to Pueblo County for costs associated with his two escapes, according to the Pueblo Chieftan newspaper.
A New Jersey couple that was suing a doctor for medical malpractice added an unusual defendant: They sued the doctor's lawyer for asking what they call "inhumane" questions during a deposition.
Andrew and Phyllis Rabinowitz claimed in court papers filed in July 2007 Judith Wahrenberger caused them emotional distress by asking during a deposition if Phyllis could have been involved in the death of their infant daughter.
"This lawyer, out of nothing more than malice and a black-hearted attempt to hurt these people, had the inhumane desire to ask whether they were involved in the death of their child," said Bruce Nagel, the couple's lawyer in both their medical malpractice lawsuit and their suit against Wahrenberger. "There's got to be limits in everything. This was beyond indecent."