I've messaged him to cancel. You're all right that option 2 makes sense. It feels wrong to be anything other than cheerful/friendly, so wanted to keep it light. But re-reading it, it sounds way too friendly
Oops. But at least it's done.
"Hey! Hope you're having a good day. I think we've probably both reached the same conclusion over the past week. Totally understand if it's too late for tomorrow, but I'd like to cancel my [X] subscription, can you sort? x"
EDIT:
duck. Sorry, me again and his response has confused me.
Well.... not exactly the same conclusion! I've had a very busy week and been working days and nights. But I understand if its the conclusion you've come to, I needed a few more adventures and a bit more time to know for sure. I can cancel the subscription, of course, but would still like to see you tomorrow if thats ok x