Opinion: A professor of social work specializing in adult sibling relationships writes about what we can learn from the rift between King Charles and his younger brother.

DEAR ERIC: My brother is 22 years old and has always had a girlfriend, though none of the relationships have ever lasted. His previous girlfriends have been controlling and possessive, to the point ...

Sibling rivalry doesn't end just because you stop living together. One woman on TikTok has gone viral after describing how her brother still finds ways to irritate her—even from a distance. Since her ...

Most siblings know exactly how to push each other’s buttons as kids, but the real challenge arises when this behavior carries over into adulthood. Do you ever notice that no matter how much you feel ...

Dear Eric: My brother is 22 years old and has always had a girlfriend, though none of the relationships have ever lasted. His previous girlfriends have been controlling and possessive, to the point ...