Robert Pattinson and Kristen Stewart -- 'Back Together' Just in Time for 'Twilight'

Robert Pattinson and Kristen Stewart were at an L.A. restaurant last night, exactly 1 month to the day before "The Twilight Saga: Breaking Dawn -- Part 2" premieres ... and it's feeling like a total set-up.

The two had drinks at Ye Rustic Inn in a hipster area of Los Feliz. There was enough of a crowd to ensure someone was going to notice.

So here's the question. Did they honestly repair their relationship and the timing is purely coincidental? Are they really NOT together but doing it for the movie? Or were they always together and the "split" was all PR BS?

So we gotta ask ...