Yup, I agree, that sure does happen! However that wasn't what I was talking about.
LegalWriter stated that OP a) had consensual sex with the woman who reported him to the police, and b) the woman is now crying rape because either the OP never called her afterwards, or her BF found out about the consensual sex.
I can't find anything in OP's post that indicates that either a) or b) occurred. So LegalWriter is extrapolating.
There are plenty of other scenarios that we can imagine about OP's situation, all of which are extrapolations unless/until OP decides to tell us more about it.

