Cassandra "Cassie" Ventura took the stand at her ex Sean "Diddy" Combs' sex trafficking trial starting on May 13 ...

Ventura testified that she flew to Connecticut. On the plane ride there, Ventura testified, she wrote an email to her mother under an alias she used -- Veronica -- warning her mother that "Sean Puffy ...

During Sean "Diddy" Combs' federal sex trafficking trial in New York on May 14, Cassie Ventura alleged that she broke up with ex Kid Cudi after the Bad Boy Records founder threatened both of them.