proximity in itself isn't really considered a fetish.
The fetish is something physically about them that elicits the sexual response. Is there anything about them that in itself can get you hard throbbing off the chain while thinking about it? Something that makes you desire them specifically, as opposed to any other person?
Proximity is something that can be manipulated, but a physical characteristic that is inherent to the flesh remains the same, time after time.
DIV