Donald Trump and Elon Musk exchanged back-and-forth insults online after a disagreement over the president's spending bill. Here's a complete timeline of Donald Trump and Elon Musk's friendship, including why they are now feuding.

Many directors also have particularly close ties to Musk. That includes his brother Kimbal Musk, an entrepreneur and restaurant owner, and Joe Gebbia, a cofounder of Airbnb and a friend of Musk’s. There are no car industry or green energy CEOs in the group, as one might expect at a typical EV company.

Donald Trump has been known to give nicknames to the people he hates. I wish he stuck with Meatball Ron, TBH. And my personal favorite, Mini Mike Bloomberg. Considering their breakup, it's fair to assume Trump will give Elon a nickname of his own, and The Lincoln Project asked people to suggest some possible nicknames.