See my other reply to you. Moreover, while "only I," you simply cannot deny the apparent duality of this dream. You cannot deny experience no matter how illusory it is. That's the actual mindfuck and the very reason why a lot of people have a hard time to wrap their heads around it. Alas, even if it could be done, wrapping one's head around it would not result in self-realization as it makes little to no sense to a mind that does not reflect self-realization.

Moreover, I'd say that there never was (nor will be) an individual who could reflect why and how the reflection actually happens. After all, that appearance of duality, this whole universe, hinges on ignorance. Ironically, seeing through the ignorance does not eradicate it. By which I mean that, while the universe exists, there will always be unknown and unknowable. Well, they don't say for naught that Maya is inscrutable.