"I knew I was doing the right thing," Cudi tells CBS News after getting some backlash to his involvement in the trial.

The “Pursuit of Happiness” singer, 41, reiterated to host Alex Cooper that he “did not want to do it.” But eventually, he realized that speaking out was a way to support Casandra “Cassie” Ventura, Combs’s on-again, off-again ex-girlfriend with whom Cudi had a brief relationship in 2011.

Kid Cudi opened up about testifying at the Sean 'Diddy' Combs trial, saying, 'I hated every minute of it,' but he was there to 'support Cassie.'