The sun rises every morning. Spring turns to summer. Water is wet. Donald Trump and Elon Musk’s relationship has ended with a post about Jeffrey Epstein.

This was inevitable. When Elon Musk attached himself to Trump during Trump’s presidential transition last fall, there was great speculation that these two massive egos would, eventually, clash and that their strategic partnership would flame out spectacularly. Many onlookers assumed that Trump would be the one to tire of Musk and that the centibillionaire would fly too close to the sun, becoming too visible in the administration or simply too annoying. During his short time in government, Musk did manage to anger some of Trump’s staff and advisers, tank his public reputation with many American voters, and jeopardize the financial health of his electric-vehicle company, Tesla. Still, through all of that, Trump remained remarkably on message and supportive.