Nick Nolte vs. Julia Roberts
Nolte and Roberts despised each other, and neither person has explicitly explained why. Roberts said it was because he was disgusting and did his best to rile people up in between trying to be charming. Nolte, while promoting a different movie, said he came about it all wrong and blamed it on Roberts being recently married.
It’s all very vague, but one could infer that Nolte had his eyes on Roberts. Both were known heartthrobs, it makes sense that Notle felt threatened and even emasculated if Roberts had rejected him. Nolte says he never reached out to Roberts to apologize but that the issue had been buried long ago.