This picture certainly raises questions, one of which is technical. It appears that there was only one model involved, so the second pair of arms had to be added post-shooting. I suppose the lower pair was from a shot where Melissa was facing the camera, holding nothing in her arms. This means that the shadows on her back had to be added later, and this was fantastically done !
From a subject-related point of view, this is a very powerful image. This is not friendship nor care, but pure, deep and intense love. Love with herself, as if nothing else matters.
From a more technical point of view, the framing is perfect, with a centered subject (the center of all attention, especially hers) and one of the most sensual butt crop I have ever seen.
Altogether, this is a brilliant picture. Who needs others when you have such a passionate yourself ?