i wonder if there is some backstory here or if the guy is just straight up evil

There is. The top was horribly raped under the order of the bottom when they were younger (minors). But the bottom doesn’t seem to remember the top or what he did to him at all.

if the bottom doesn’t remember it happening or him at all, isn’t it possible that it never actually happened and the top is just gaslighting him ??? from the spoilers I read, it sounds like he breaks him enough to be reliant on the top so I’d assume he’d probably just accept whatever bullshit that leaves his mouth as pure fact at that point ??? I haven’t completely read it so idk