Kinks in theory vs in practice
Such as Forbidden love kinks are much more destructive once actually achieved compared to just having them in the back of your mind. It'll permanently change the dynamic in the relationships you currently have with many people should anyone find out, but one thing is for sure. The dynamic between you and that person will never return to zero.
Thus fedi, if you harbor such fantasies, live life never having them come to fruition. Simply, it's not worth it.