That's a tough one.
We can usually talk things out and come to a resolution about what's really upsetting the other one before the event. I think I'd try keeping the lines of communication open. I also think I'd try to listen to the why of what upset him on how you told him you wanted to do the ride. Would not going on the ride help anything (i.e. was there something else planned - I'm shooting in the dark here)? If not, then go.
Good luck to you both!
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