President Trump and Elon Musk aren’t an exclusive item.That point was clear this week when the president welcomed OpenAI Chief Executive Sam Altman to the White House on the second day of Trump 2.0—a visit that left “First Buddy” Musk publicly fuming.

According to Politico, White House staffers think Musk overstepped by publicly accusing OpenAI of not having the money needed to hold up its end of the bargain for a $100 billion investment in the Stargate initiative.

OpenAI’s CEO has stolen Musk’s thunder and it’s a lesson for every leader. Sam Altman and Elon Musk aren’t friends. They used to be colleagues back when the two were co-founders of OpenAI, and they seemingly shared the belief that artificial intelligence could be a huge net benefit for society.