Here some ideas. You could be sued, but what is equally bad is that they might take revenge in some other way, everybody has a weak spot, and they can find it. Why would you want to hurt these people anyway, time has passed. The best revenge is to not mention them at all, especially for big egos being ignored is the worse punishment. As long as you write about facts, they can’t sue, e.g. this guy fired me may be fine (if factually 100% true), but he seduced my boyfriend is tricky (it may be true, but hard to proof /disproof). You may consider changing all the names, places etc, and turn it into a book of fiction.
Here some ideas. You could be sued, but what is equally bad is that they might take revenge in some other way, everybody has a weak spot, and they can find it. Why would you want to hurt these people anyway, time has passed. The best revenge is to not mention them at all, especially for big egos being ignored is the worse punishment. As long as you write about facts, they can’t sue, e.g. this guy fired me may be fine (if factually 100% true), but he seduced my boyfriend is tricky (it may be true, but hard to proof /disproof). You may consider changing all the names, places etc, and turn it into a book of fiction.