>>198340 (OP)
Idols are marketed as girls whom the fans could totally have a chance of getting laid with, when that's obviously not the case. See >>198354
Because of this, idols are asked to not have sexual relations to anyone, or at the very least never never disclose this in anyway; when they inevitably end up having boyfriends, and this is discovered by idolfags, which happens often, they throw tantrums, and the idols career often ends up nosediving as a result. Unless the fans somehow adopt a mindset of "wanting the best for her". Calling it cuckoldry would probably not be a surprising opinion.
https://soranews24.com/2019/10/12/idol-stalker-figures-out-where-his-target-lives-from-the-reflection-in-her-eyes-in-social-media-photo/ Idol fans are notoriously autistic, obsessive, and prone to shit like this. They can draw the biggest of conclusions from the tiniest of details.
Fans of VTubers, essentially 3DPD idols behind a 2D mask, are this to the power of 1000. They have done things like (supposedly) figure out Gawr Guras ovulation cycle based on her stream behaviour, and deduced that a staff member was posting on some Nijisanji vtubers twitter account rather than the actual vtuber, based on a single punctuation mark being different from what she normally used.
>because no one actually forces you to become an idol, and it's in fact pretty hard to become one.
Girls who try to become idols usually don't have a lot of alternative career paths.
For failed idols, and idols that have grown too old, they often end up taking the same path: JAV.
I'm sure i don't need to tell you about the inevitable fate of porn stars.