Sorry if I'm wrong, but it seems that your mind is made up and you're just looking for support, but we don't know all the facts, even if you would now say we've been told all that we need to know.

First, this is what happens when you share an intimate or expensive thing (a hotel room) with someone other than a friend. If I can't even be honest and open with someone, why would I ever think of sleeping in the same room alone with them? Easy, I wouldn't. I do think you're being unethical because you're playing a non-disclosure game. If you're in the right, what harm can come from telling her? If it's embarassment, then we're back to this is what happens when you share an intimate or expensive thing with someone other than a friend.

Second, on the one hand, you say you don't care what she thinks, but on the other hand, you didn't want to rub it in her face that you were so good at getting compensation. But you say you don't care about your reputation. But you're hoping we can clear your conscience.

With what info we have, I'd have to say that it just doesn't seem like you fully sucked it up. If you're found out and she tells the bride, where will you stand? And if you don't care, then why get into the whole mess in the first place? And if you don't care, why even try to win us over?

It's a tangled web we weave...

(And the plane analogy doesn't fly either--it's two seats. If you were talking about a chartered Cessna, we'd be right back where we are now. I think one thing was shared, that one thing being a hotel room albeit for two nights.)

I know I was judgemental, too, but you've asked us to judge.