Hair in bed + the girl at the restaurant
One thing I wasn't clear about.
So Faye finds that strand of hair in the cop's bed. In the next scene, she examines that cute girl's hair at the restaurant as if she recognizes it, and teases her about her hair. Faye is obviously jealous, and the cute girl looks uncomfortable. Either she's uncomfortable because she suspects that this girl Faye is "competition" and on to them, or maybe because her hair is being examined by a weird stranger. Maybe a bit of both. Anyway, I always thought that girl in the restaurant was pretty cute with a nice body, and was curious if the lonely cop was actually having a little fun with her on the side, and both Faye AND the audience wasn't being let in on that story. I think that would be interesting if he were sleeping with that girl, because otherwise he just seems like a lonely, heartbroken man who didn't have much of a love life. At least not the cop we the audience (and Faye the character) saw.