The thing is, according to Biblical canon (if we're taking that seriously,) the devil is one of the most beautiful beings in creation. He's an angel, albeit a fallen one, second in power and glory only to God. Also, the devil doesn't have horns - that's a motif added by the Church associating the devil with pagan horned deities like Cernunnos and Pan.

Also the devil lies, all the time. He's literally called the father of lies. He isn't bound to human rules of politesse or legality (definitely not morality,) only to what God allows him to do, and God let the devil ruin an honest man and slaughter his entire family over table stakes in the Book of Job. Even the serpent in the Garden of Eden was for all intents and purposes just a talking snake at first. Religion is weird like that.

And yes, technically that wasn't "the devil," because the "Satan" of Job and the devil (Lucifer) were different beings at one point, but now I think they're conflated.

I like your story - it reads like a one-off and if so I really respect the flow. I used to write and was only ever able to pull that off once, it was like somehow I did real magic, but was never able to again. But (putting my critic hat on, because those who can, do, and those who can't criticize) it's also a bit too cliche and even tame, to me. I mean, the devil may as well not have even been in it. The whole world is already is already full of rich sociopaths and charismatic predators ready to lead people into vice and corruption. You're not describing an encounter with the literal devil you're just describing an interesting life.

I won't tell you that you are wrong. But speak to your local priest. You have a lot of weird opinions and they could be dangerous. Especially if you think a lot and speak a lot. You might say something you can't take back .