British office workers were warned off making declarations of love and roses were banned at a Swedish school in a series of warnings that took the romance out of Valentine's Day.
Also putting a downer on candle-lit dinners around the globe were warnings that romantic e-greetings could wreck your computer, that creepy-crawlies might lurk in cut flowers and that Valentine's balloons might cause power outages.
Office politics reared its ugly head in affairs of the heart in Britain with a legal expert there warning that sending Valentine's Day "e-cards" to colleagues could result in dismissal if they get taken the wrong way.
Peter Mooney, head of consultancy at Employment Law Advisory Services in London, warned: "Sending this sort of thing to a colleague might seem like banter but it could easily be interpreted as an unwanted sexual advance.
"Even sending a traditional Valentine's Day card could result in a sexual harassment claim but the risks are increasing as more and more people send their greetings via the Internet."
A Swedish school said meanwhile it had stopped the sale of roses to students on Valentine's Day to protect the feelings of students without a sweetheart.
"Some students received dozens and others received none," the vice-principal of Gaerdes school in Stockholm, Lars Wikander, told AFP.
He said pupils who received no roses could feel excluded and suffer "from getting no attention at all throughout this special day."