Now this is cold, but new research from You Gov has found that 7 percent of Americans have ended a relationship on Valentine’s Day. That number jumps up to 12 percent among 18- to 34-year-olds. And then there are the before and afters … 7 percent said they had ended a relationship just before Valentine’s Day, and 5 percent said they broke things off immediately after the day of love. (The Ladders)