Miley Cyrus slammed ex-husband Liam Hemsworth by changing up the lyrics to her hit song “Flowers” during her performance at the 66th Annual Grammy Awards on Sunday, February 4. While singing the words “I didn’t wanna leave you,” she added “but I did,” and after saying “I didn’t wanna fight” she quipped, “but we did,” seemingly referencing her tumultuous split from the Hunger Games actor. Following the performance, fans of the Hannah Montana star took to social media to praise her for shading her ex and supposedly “winning the breakup” after earning her first-ever Grammy for a song rumored to b…