Matthew McConaughey reveals that he and Woody Harrelson could be biological brothers. Both born in Texas, the two actors first appeared together in the comedy films Welcome to Hollywood, EDtv, and Surfer, Dude before reuniting years later for True Detective season 1 and now, an upcoming Apple TV+ series. In addition to sharing the screen, McConaughey and Harrelson have also maintained a close, brother-like friendship over the years, so much so that their kids call the other "Uncle."

https://screenrant.com/matthew-mcconaughey-woody-harrelson-brothers-biological/