Much to my surprise, I can find no reference to the nearly universal cinematic “wedding-ring rule”: Any time a wedding ring is a prominent prop or visual motif in a movie, infidelity will be a central theme. The obverse: Any movie with infidelity as a central theme will feature the wedding ring as a prop or visual motif. I could offer dozens of examples, but the best might be Lantana, which is obviously about sexual straying but has a greater interest in marriage overall, especially the underlying, intertwined issues of trust and honesty. Although it’s nearly too blunt in its themes, the movie feels continuously right, nailing not only relationship dynamics but interred grief and pain. Throughout, it gets the tone, nuance, and scale of life correct.