I don't consider no Jack/Elizabeth to be a spoiler because there never was a Jack/Elizabeth...they were blatantly just catering to those who wanted a hint with no intent on carrying through. Even if you dislike Will/Elizabeth,t here's just no way Jack/Elizabeth is canonicallt plausible. Even when theywere hinting at it, it was obvious there was no way they could ever have Elizabeth choose ANYONE over Will...too much of canon revolves around Will/Elizabeth for me to understand how anyone could ever think it could be different.

The second film was essentially half a movie. It works better if you think of it that way.