You could call it everlasting love: Scientists have discovered the oldest fossil of mating insects, which lived during the Jurassic period.A pair of unlucky froghoppers were caught in the act in what’s now northeastern China and preserved in stone over 165 million years ago. Froghoppers are a type of small insect named for their tendency to hop around plants like tiny frogs.Read more: Oldest Fossil of Mating Insects Found; Sex Positions Haven't Changed.