I thought my siggy was funny too 😆 And you know that I love Norribeth. 😉
The line about the kiss, I think, was added after some major revisions from the original script.
From what I understand, there was no intention of there ever being a 'true' love triangle, that it was all supposed to be about Will and Elizabeth, but the director and producer probably wanted to generate more interest (congratulations boys, you did it!) by 'creating' a love triangle.
The "kiss" line may be a direct reference to the Kiss of Doom and Death, and to remind us of what happened in DMC, but I wouldn't take that as proof of J/E. I would say it solidifies the obvious affection Jack feels for Elizabeth.
The real question in AWE is if Elizabeth returns that affection, to what degree does she return that affection, and the big quesiton; Can Jack and Elizabeth make a happily ever after?
Yeah, I know it's Disney, but I can promise you that the 'triangle' will be resolved one way or another, and the best way to seal the deal is to have a wedding, or hint at one. 😄