Confusing yet Intriguing & Beautiful! Well acted & shot!

i'm also wondering the same thing. can anybody answer those three questions? would be well appreciated.

1) They did not
2) same guy different girls (or at least, different iterations)
3) The car was supposed to hit a guy, not a girl. She saved him in that universe. And two suns represent different iteration of Earth (or whole universe, to be precise, where Earth has two suns).

Well a lot of it is meant to be ambiguous I think. It plants the seeds of a lot of questions and I'm pretty sure that we're meant to come to our own conclusions much of the time. Regarding your questions:

1. Maybe they did in one universe but not in another.

2. It could also have been different versions of Dell and different versions of Kimberley in each universe. But I'm inclined to think most of it took place in one universe because certain events happened as a consequence of things that had happened before. Like if Dell has gotten his proposal in Paris right, the train scene, the phone call in the car, and the last scene might have been very different. It seemed like the initial break up and all that followed was a result of Dell's botched proposal. In a different universe that scene might have played out differently leading to different consequences.

3. Possibly. Or it's possible that Dell died (Kimberley never saved him) and everything took place in Dell's head in the moment before he died.

I think that the two suns at the end were a reminder to the viewer that this is taking place in a parallel universe. We're also reminded a few other times, like when Kimberley draws the comet in sky. It's a reminder that if Dell and Kimberley don't make it work in the universe that we're seeing, maybe there's hope for them "a few parallel universes over". And if they do make it work, then there's probably somewhere out there where they break up and end up with different people.

SPOILER ALERT!!
SPOILER ALERT!!

1.) I think it leaves it open to the viewer's interpretation. Dell tells Kim to leave Jack and that he loves her, and the movie ends before they embrace. Did she reject him? Did she leave Jack? It's up to us to decide.

It could also be a dream as well. Dell tells Kim at the end of the movie that he had a dream about memories of previous conversations (which we do see throughout the movie), and then he dreams about their last conversation which hasn't taken place yet. In the dream, he tells her that he loves her and to leave Jack, and right before he kisses her, he wakes up. In the final scene, it happens exactly that way. And there are two suns in the background that could represent it is a dream, and not reality.

2.) It is the same boy/girl. All of the scenes represent critical moments in their 6 year relationship. It might not be the same universe as ours, but these events took place in their universe. They met at the cemetery, had a fight in the hotel and broke up for a year, reconnected on the train and got back together, broke up on the phone while she was in LA and he was in NY, and then talked at her place in the final scene.

3.) Again, I think the writer/director dangles hints both ways to leave us wondering. But, in my opinion, he didn't die and everything happened the way we saw, except for possibly the ending. I think the point of the ambiguity was for us to have these exact discussions. Which are always fun.

One question I have is how long were they broken up for before he visited her at the end and she was engaged??

My Interpretation (spoiler alert)
1.They get back together, Dell just figure out Kim's lies about pregnancy.
2.I think it's just the same boy and girl, but different universe(s)
3.Or my interpretation just plain wrong, What bug me is the earthquake near the ending, and Kim just seem oblivious about it, therefore it's all Dell's imagination as it flashes through his mind just before hit by a car. Kim never saved him. He died, she never gets to know him. Hence the two suns sets, and two suns rises (because it's all imagination.

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I think the ending of the movie is really based on the way you see it.

of all the possibilities that are discussed about this film there is one more possibility.

- In the movie the girl wants the life to be like a painting where there is no beginning , middle and the end. So based on that if you try see the end shot as the painting which last just more than a second. In that shot the boy moves towards the girl , shadowing one of the sun. So if we try to see that as a painting , we can see a boy and girl standing very close to each other (sort of in a romantic way) during the sunrise (Only one sun rising so no question comes regarding the parallel universe thing ).
This means in that last shot the director wants us to see that everything happens in the real world and ending the movie as a painting -see what you want to see.

This is a basic story of the committal/non committal aspect of a relationship. Yet there appears to be two endings, one where they express their love and the other where she says she's pregnant with Jack's kid and she's not leaving him.
Long's character can't accept this, realizing he waited too long to make his move on a woman who was deeply in love with him, but couldn't get him to pop the question. I found that a bit hard to swallow. I found the quick cut when he rushes to her at the end a rather trite device to keep you wondering.