President Donald Trump lashed out on Thursday against his ally Elon Musk, saying he was "disappointed" by the billionaire's public opposition to the sweeping tax-cut and spending bill that is at the heart of Trump's agenda. "Look, Elon and I had a great relationship. I don't know if we will anymore," Trump said in the Oval Office, in his first direct response to Musk's criticism. "He said the most beautiful things about me, and he hasn't said bad about me personally, but I'm sure that'll be next. But I'm, I'm very disappointed in Elon. I've helped Elon a lot." Even as Trump was speaking, Tesla CEO Musk unleashed a series of critical responses on X, the social media site he owns. "Without me, Trump would have lost the election," he wrote. "Such ingratitude."