AITA?

Dear Schmedit:This past weekend my fiancé (24 M) and I (23 F) were at a party at a friend's and I'll admit we both got pretty wasted.... Apparently sometime that night he asked me if it was okay to summon a demon for a threesome before our wedding, and according to him, I told him, "Yes."I don't actually remember this happening so clearly? But his friends must have heard me-because a week later, they'd all pitched in to have a Delectably Demonic T summoning kit delivered to our house for him.
I want to put my foot down, but that would make him sad. I think he was really looking forward to it after I told him it'd be okay-and his friends really did spend a lot of money on this thing. It's top of the line, and they can't return it. You know how demons are. So I kind of feel like a jerk. I mean, I did say yes, and I don't want to let him down. If I tell him no .