Thugpreacha

In the supernatural realm, there always was, is , and always will be One Diety.
1) He created His Angelic Beings. Given Free Will, some chose to remain within the original One reality, while others chose(and were allowed to have) reality #2. We thus have multiple realities, with an emphasis on One True reality.
As to how we know which is real and which is not, I will let you answer that one.