So many things baffle me about this story.
How can someone that took the girl back to his hotel room and had sex with her not be guilty, but someone that joins in - with consent from both parties - be guilty. If she was "too drunk" to give consent, surely she was too drunk to give consent to McDonald in the first place? Or did she get absolutely hammered in the time between Evans entering the room and asking to join in, that 5-10 second interval. And anyway, Evans has asked to join in and she's said yes, what's he supposed to do, breathalyse her? Oh so you don't need to breathalyse, you just need to make your own judgement. Well how do you determine when someone you've just met and know nothing about, other than they're having sex with someone else with no issues, is too drunk to consent?
I just don't understand at all.