Don't ever ask me if I'm cheating.
The very (hypothetical) fact that I'm having sex with somebody at all is one of the highest compliments I can pay them.
It's extremely rare that I get the urge to do so.
I'm very easily disgusted and prone to changing my mind.
They're not mind readers though, and you sound pretty secretive. If they haven't known you for very long then how are they meant to know the severity and context of lines three and four?
What if they legitimately are having an insecure moment, rather than that being who they are? I'm sure you'd understand it being a moment, plus possessiveness can come from more than just a domineering personality. A lot of it is conditioned into us by culture as well as being ingrained enough within the vast majority of people to reinforce it.
And yeah, I hate people.
I've had sex 5 times in the last 20 years, and ditched every one of them within a few days at the slightest sign of douchebaggery.
You make it sound like a fear of commitment, if not a general insecurity over people knowing enough about you to potentially judge you once you've caught enough feelings to take it more personally.
There really is something weirdly piercing about someone intimate saying the same thing you wouldn't bat an eye at a stranger saying.
I don't need to cheat.
If I want more sex, I will simply say so.
If partner is up for it, great.
If not, then I'm done.
You make it sound... transactional.
That tends to be red flags for me when it comes to connection and empathy, but in your case (unlike Spatial) rather than a lack of empathy it sounds more like not wanting to be bothered with a sensitivity.