The movie starts of in an open road where a cop car (or maybe more than one, but I think one cop car because it's like those old heist movies with not much cops in the area, country, western like) is chasing another car with a guy and girl in it (the area based on the movie is open, meaning a lot of trees not much houses, not also much cars on the road, country like). The guy tells the girl to jump out of the car and escape (or I think she takes whatever they stole, diamonds my guess), and she jumps out of the car (she jumps and lands on the grass, cause it's open veldt), watching him drive off while still being chased! (I think he is headed to cross the border).
Later he seeks out to find her because he wants the diamonds. Upon looking for her he sees a young, pregnant (not sure), light skinned black woman (the woman is very beautiful, I think she got green eyes, and wearing a dress, she is standing by the road) on the road. He stops to pick her up (but first he drives past, then reverse to pick her up), but she pulls out a gun saying that she knows what men want and she would rather take his car (but she's scared holding the gun, not experienced in guns, she pulls the gun from her purse). He walks a few steps forward (he says she must shoot if she wants, cause the guy knows she won't) and she accidentally shoots (when she shoots, she's like omg). He says watch it (and takes the gun), she's like sorry and they both jump in the car. He gets flashbacks about his girlfriend (like there is a sex scene) and tells the girl about her.
It's getting late and they stop at a friend's house (the friends lives like in the woods, like no other houses around, in a wooden house) to spend the night(they chat, have a drink and show him a shot gun, they talk of old times, it's his best friend), but while the girl is sleeping, the friend tried to rape her (he's like "I know you want this"), but is shot from behind (he turns around to see the guy with the gun, falls, and says "sorry, it gets lonely out here"). They leave.
Later, the guy meets up with his girlfriend (who he was tracking) and they both end up dying next to each other (they kill each other but they love each other very much so they they die happily hand in hand).
(The whole reason why they fight and kill each other, is because he tries to contact her once he escaped from the cops but she was nowhere to be found, and she doesn't even call him or keep in touch with him, that's why he is on the road searching for her, and she just wants to keep the diamonds cause she knows once it's sold she can be be rich, so the fight for the diamonds.)
The hitchhiker girl is then shown driving away with the diamonds (which he gave her to keep during the fight) looking at the two dead lovers in the car mirror looking sad cause she really bonded with the guy. (The girl is now heading to cross the border with the stolen diamonds (cause at the front you can see the police and the border gate).
I watched this movie on E TV (a South African channel). It's a Hollywood movie, and has an 18snvl rating. I believe that it's a 1990s movie. It was played alongside Babel and Basic Instinct with the same age rating at the same time slot (10:30pm+).