Train scene in the movie "Shame"

I'm not sure that the rings bear as much significance as you're inferring.

Why, for example, do two rings mean someone is married, but one rings doesn't? To indicate someone is married, she (Lucy Walters) need only wear one ring: her wedding ring. In the first scene she is also wearing her engagement ring, but this doesn't neccesarily indicate anything further. The fact that she still wears a ring in the second scene doesn't do anything to imply she is divorced.

The first scene is a silent correspondence between the two, a negotiation of intent. The smiles indicate they are attracted to one another, and as the girl closes her thighs over her hands she indicates some sexual repression, the proximity of her hands to her crotch suggesting sexual stimulation.

She then considers something, and feels the titular shame of the Movie. Standing up to leave the train, she shows Brandon she is married by revealing her rings. He stands behind her, placing his hand underneath hers (in simulation of holding her hand) as if to indicate he still wants her and is uncaring as to her marital status. His proximity possibly suggests he wishes the altercation to be sexual charged, not neccesarily emotional.

As she leaves the train, he follows her, in pursuit. This is at the start of the scene , and establishes Brandon as sexually predatory..

The end of the film shows a reversal of this situation, and the second subway scene is telling.

She has obviously been on some kind of sexual journey too, but the culmination of her experiences has brought her back to Brandon. Part of the enigma of the film is the fact that we don't know what's happened to this woman and what has made her re-approach her stance on soliciting strangers for sex. She has somehow, become more like Brandon.

The fact that she still wears a ring on this finger indicates that she is still married. She has just embraced her infidelity, and wishes to explore the experience of it. The fact we see her ring is, I think, supposed to be a visual motif the audience will attach to this non-speaking, ambiguous (but still important!) character so the audience recognizes her and completes the cyclic narrative of the Movie.

I don't think the rings (and their amount) indicate anything beyond the obvious, and as a narrative technique.

Unless I have seen a different movie cut than you guys have, I am pretty sure that in the last scene she is still wearing both rings (if you guys can pause the scene you will be able to see) only in a different order. Which brings the question to another direction... What does the switched ring order means after all?

I think that she is often takig them both off - that's why their order is reversed - by accident, she does it in hurry, she dosn't pay much attention to it, she is focused on something else ;)

I think it can also be linked to what Brandon said to his sister -- that she didn't notice that Brandon's had an engagement ring, and in that final scene it lets us think if he learned from his own words, and will not attempt doing the same stuff that his sister did which he considers wrong.

I think the two rings is a visual metaphor that symbolizes the union of two people through marriage, i.e, total commitment as in mentally and physically. The one ring symbolizes the detachment of one of the two sides from the union/marriage, i.e, Lucy Walters' character asserting 'although I am married I am not necessarily exclusively physically linked to my partner any more'. hope this helps.

You need to diferenciate between a wedding ring and an engagement ring. In the first scene she is wearing both, then only the engagement one. The wedding ring (in Spanish "alianza", which meand union) becomes a symbol exactly of that, been real to that relationship. I think the interesting point of that scene is trying to understand the empty glare of Brandon, not the woman who is obvious trying to suck his balls, with her lips painted and her attitude. Great job, Michael & soundtrack guys.

After he himself went on a sex-bender while ignoring his sister, we can see he makes a resolve to change himself. The end where the woman flirts with him is an open ending in whether he'll be able to maintain his resolve or succumb to his addiction.

It's an open ending. He's confronted the addiction. Something might change, judging by his expression. He breaks his own stare at that woman momentarily which suggests he's at least thinking and not on automatic sex-rut.

If the ring does indeed matter, and as everyone knows directors don't do these things on accident, then perhaps it is to show that it would be easier for Brandon to act on his impulses as he always has. She would be more willing. I like to think that his not immediately grabbing the pole as in the first train scene means that the near-death of his sister shocked him into the realization that what he had become a slave to was destroying his life and those around him. It certainly seemed that way when he was walking and broke down. I believe also that the directors wanted discussion such as this, and there may be no truly correct answer, but preferred interpretations. I really hope he didn't go for her after everything he had just gone through. If not, it would seem he did have his epiphany.

When the lady realises that Brandon is looking at her. She acknowledges that and smiles at him .But Brandon's continuous ogling at her (afterwards her thighs) makes her uncomfortable , then she shows Brandon her ring (to let him know that she's married), but still Brandon continues. After all this, she gets up and leaves the train because she doesn't like the way Brandon ise looking at her. At the end, again the same thing happens but this time the question is, will Brandon continue his pursuit of the lady after realizing that she is married and has a family (he tried to explain Sissy the same thing, when she slept with David)

The ending is not clear, it has been left to the viewers discretion, it's open, and the viewers can analyze it themselves.