Turns out there is such a thing as tough love? Who needs that? All of us, according to new research. Typically, all we want from a friend is support—unconditional, uncritical, and unwavering support. OK, that’s not completely realistic, but new research suggests it may not even be healthy. (By the way, you should never say these things to your single friend.) According to a study from the University of Plymouth, when a friend is cruel, she or he might actually be kind—even if it doesn’t feel that way.