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.

Cudi, who briefly dated Diddy’s ex-girlfriend Cassie Ventura, was subpoenaed to testify at the disgraced music mogul’s sex trafficking trial

Kid Cudi says he hated every minute of his time on the witness stand in Diddy's federal criminal trial ... but he ultimately went through with testifying because he wanted to support his ex, Cassie Ventura.