Cudi briefly dated singer Cassie Ventura in 2011 and testified about the abusive nature of her relationship with Sean "Diddy" Combs.

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.'

Kid Cudi, a key witness in the sex trafficking trial against hip-hop mogul Sean “Diddy” Combs, revealed in a new interview published Wednesday that he declined to testify twice before he was ultimately subpoenaed.