It is unacceptable to rape someone.
John has a crush on Susan but is too coward to express his love.
John wants to have a closer relationship with Susan.
John plucks up his courage, sending Sally a bouquet of red roses and asks her to be his girlfriend.
John invited Susan to his home and has sex with her despite her unwillingness.
Sally is delighted and agrees to be John's girlfriend.
Susan calls the police and John gets caught for forcing her to have sex without her agreement.