Thank you for sharing. Hopefully this story proves to the naysayers on here that these type of convictions can and do happen. The CPS are ruthless and care nothing for whether it was consensual, whether there was a relationship or abuse etc.
I hope that your friend is managing to do alright now, and has managed to find employment. It's extremely hard with a sexual offence history and a permanent criminal record. These kind of things are always revealed on a DBS.