"wrong number" is probably the worst way to recover from any bad text. Make up anything else. You're happy you got some chicken nuggers. You're fucking a coke bottle and got your dick stuck. You found a stray cat. Anything but "wrong person".
He should have been like.... "Yeah BALLS DEEP IN SOME CHOCOLATE. Sorry, I get really excited about chocolate sometimes." Then it's super awkward but maybe less obvious? Lesser of two evils? I don't know what I'm talking about. Maybe you shouldn't tell people you want to f**k chocolate.
You (are about to) get laid and you go tell everyone