How exactly did Bobby 'rape' Ali?

She was a drug-addicted promiscuous shady girl, who had offered sex to numerous dudes. I mean, I *beep* hated Bobby, and Marty had every right to want him out of his own existence.. but how was Ali's revenge justified? She knew from the start that Bobby was bad news, but still opened her legs to him. It's not like she was an innocent girl in a back-alley minding her business and got sexually attacked by a stranger. She gave her full consent. It pisses me off how girls do that, especially when it comes to court of law. And the idiotic feminists who back them up. Ah, gotta love double standards, yea?