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.

The billionaire’s feud with the president over the nation’s debt is jeopardizing lucrative deals for SpaceX and other Musk companies.

The bizarre bromance between Elon Musk and Donald Trump is apparently over ― and the ramifications are being hilariously felt on social media. Musk helped Trump get elected and headed the president’s so-called Department of Government Efficiency project until recently.