Bug (2006) on Netflix

Agnes White lives in a remote motel in Oklahoma. Her life is what it is. She works at a honky-tonk. She has a lesbian friend. They do coke sometimes. She needs a man like a hole in the head, she says. Her ex-husband, Jerry Goss, now in prison, was no prize. One night, her phone keeps ringing, and when she picks it up, she only hears breathing on the other end. Agnes is annoyed. It must mean that Goss is out. Her friend brings over a guy. He's good looking, a bit quiet. He knows his comments about the government and about how he can "pick up on things" put people off. He ends up spending the night on the couch. He assumes Agnes will hate him like most people do. But she doesn't, just the opposite. She won't admit it, but she needs someone. The guy's name is Peter Evans, and he'll be the one who finds the aphid in her bed. And he'll soon have a theory on where it came from.