There was a movie on IFC in 2005/2006 that only had two actors.  A man and a woman visit the salt flats in winter, I believe they drove there in a SUV.  They are both wearing snow suits, I think.  Hers was yellow.  They talk and appear to be friends.  He reveals that he has a crush but she denies his advances.  He ends up assaulting her and afterwards she reveals that she didn’t want to date him because she has AIDS.

I think everything happens on the salt flats, single location, just the 2 actors.

Might have been a winter coat/puffer instead of a snow suit, but pretty sure hers was yellow.

Sure appreciate it if anyone else has seen this or remembers it.