Cassie Ventura, a longtime girlfriend of Sean "Diddy" Combs, said she loved the hip-hop mogul and felt a sense of duty to join "freak offs."

R&B singer Cassie, a former girlfriend of Sean "Diddy" Combs, took the witness stand Tuesday to testify about her experiences with the music mogul in the ongoing, federal sex trafficking trial against him that officially began this week in New York.

There were moments when Cassie Ventura did not seem comfortable in the spotlight, perhaps because of what she now says was happening in the shadows.

Sean ‘Diddy’ Combs, who is on trial at a Manhattan court on several allegations of sex crimes, was allegedly pinned against the wall by a security guard who claims Combs tried to bribe him after the music mogul assaulted his then-girlfriend, Cassie Ventura, the former guard said in court.

Prosecutors in opening statements called Combs a cultural icon to the public – but alleged he 'committed crime after crime' in private.