@AAA1 First, I did not say they were not important, I said they were not as important as your career, get it right. Second, work on your grammar I can hardly understand what you're saying, but what I can understand from it suggest you did not understand my post at all probably because of a language barrier. Either that or the number of typos in your post is absurd.
Either way, if the MC's parents are the kind of people that would ruin his life over what this girl says, he's better off not being close to them anyway, and wouldn't lose anything distancing himself from them. She didn't spread this around the internet or tell strangers, she told his parents. There is also the assistant, but I think she forgot the assistant was there and didn't mean to tell her. But it's super unlikely that anyone present would spread this information. And the editor would also keep the assistant quiet because the editor knows this arrangement is making the FMC write better.
Also using the term simp here is totally incorrect here, because he's not sucking up to her demands. He retaliates against her and doesn't let her walk all over him. It's just they both seem to be enjoying this confrontational back and forward, so neither of them is doing anything to end their relationship with each other.