Elon Musk speaks during a news conference last week with President Donald Trump, days before the president publicly criticized him from the same room. (Tom Brenner/For The Washington Post) By Cat Zakrzewski , Faiz Siddiqui and Elizabeth Dwoskin

The alliance between President Donald Trump and Elon Musk spectacularly imploded Thursday as the world’s most prominent bromance collapsed into mutual public trolling.

For months, as Musk emerged as the president’s constant companion and self-proclaimed “first buddy,” the question hovered of how long a duet could last between two men used to soloing on center stage. Thursday’s angry exchanges provided a definitive answer. Subscribe for unlimited access to The Post You can cancel anytime. Subscribe

The breakup also highlighted the politi

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