Your last paragraph reads rather odd to me. Poly relationships exist but involve mutual consent. That’s the reason why cheating in many cases is not at all ok. Because the other party doesn’t consent to it and it’s done in secrecy and deep violation of the person’s trust. It’s ok to have multiple partners or have sex with other people. You can too if you want to! But everyone involved has to agree with that kind of a setup for a relationship. Hiding it and hurting the other person is almost always immoral and wrong, even if it “feels good” to you. There are ways that all parties can consent to make your “feeling good” not hurting or taking advantage of others.
I’d be surprised if any celebrity was on Lemmy lol. It seems like it would be for everyone! That sounds pretty interesting to me!