Thanks to you and the others who have offered advice.
I've a strange and almost unique dynamic with my boss. He's extremely senior and we've nobody between us in terms of hierarchy, where as pretty much anyone else of my level would be reporting to someone closer to my own level, if that makes sense.
So he brought up shit like "you're in a privileged position to have such direct contact with someone in my position" and all kinds of shit that on reflection was absolutely insane. I was just so shook on Friday that I just kept nodding and saying yes.
I was so shook after his first call on Friday morning that I went over to the Cork office because the girlfriend was working from home and it was embarrassing. Thankfully the office was dead but even with headphones on I couldn't really reply as I wanted to as I didn't want to let on to other people that I was getting ripped apart.
Unfortunately the person who threw me under the bus is someone who I'd have counted as one of my closest friends/allies in work. I emailed him twice on Friday and got no reply. Fucking mess.
