Valentine’s Day is a high-pressure event dreaded by millions—precisely the type of holiday you may not want to relive, unless you sell flowers for a living. But that’s exactly what happened to many people across the United States on Thursday, when they awoke to find that their phones had suddenly sent or received text messages originally intended to be sent around February 14.

Get in-depth coverage of current and future trends in technology, and how they are shaping business, entertainment, communications, science, politics, and society.