I am noticing inconsistencies between the woman and the man in the videos. In certain videos, the woman has tattoos on one of her arms, and on her lower back (tramp stamp). In other videos, she doesn't. Same for the man.
From a quick google search, neither Grayce nor Melvin have any arm tattoos. Highly likely that some of these videos are fake, unfortunately. From the BJ videos, the face is quite similar but hard to tell. Input welcome!