I get where you are coming from - you can speculate all kinds of scenarios
However the jury should not do this. Rather they should consider only the scenario that is put to them by the defence. The defence cannot argue that on the one hand, PR just left her in the park and nothing happened (statements to police) but on the other hand, he had sex with her - but then won't say what happened - and then on the other hand, the version he gave to his friends
The jury is not required to invent potential exculpatory scenarios that the defence itself does not make