In 2014, a study found that three-quarters of white people dont have any non-white friends .

The study, reported by The Washington Post and conducted by the Public Religion Research Institute, found that for every 100 friends a white American had, 91 were white. On average they had one Black friend, one Asian friend, one Latino friend, one mixed-race friend and three friends of unknown race.

By comparison, the average Black American had eight white friends and 83 Black friends, in a 100-friend scenario.

The sad reality is that, as adults, we tend to be racially segregated in our friendships, just as we are in our neighborhoods . While interracial friendships are fairly commonplace during our school years, studies have shown that children entering adolescence are less likely to maintain cross-racial friendships as they grow older.

If a white child has a friend of color, its likely that the friend is a minority in a mostly white community, said Beverly Daniel Tatum , a psychologist and author of Why Are All the Black Kids Sitting Together in the Cafeteria? and Other Conversations About Race.

Then, as those friends of color approach adolescence, they start to become aware of experiences with racism, from name-calling and racial profiling in stores or by police, to social exclusion not being invited to teenage birthday parties, for instance, she told HuffPost.

If the child of color is being teased or excluded, and the white friend doesnt speak up, or worse, participates in the teasing or excluding, the cross-racial friendship will eventually unravel, Daniel Tatum said.

Developing cross-racial friendships is even more difficult in adulthood. Outside of maybe bonding with a co-worker of a different race, we mostly adhere to our geographic segregation and stay socially segregated, too.