Keep Breathing (2000)

Alison is a young woman on a clock - she's been diagnosed as HIV positive, and now has to confront her past as she contacts her sexual partners to warn them to get tested. Josh is a young man wrestling with his own demons - having blown it with the girl of his dreams, he now finds himself unable to make any emotional connections and hopes to leave town to escape his problems. These two people have nothing in common... and, maybe, that's exactly what they're both looking for.