Well i think that rumple is alive, why, because the dark ones can kill themselfs, if that was possible then the dark one before rumple would have kill himself.
However i do think that Adam and Eddie dont like Rumbelle like they love snowing, but i do think that they will reunite again on S3B, will they have a happy ending, although i want them to have and as a neal fan i would love to see the family relation develop, i dont thing they will have.
I really wanna have hope, but this moment is like -0% that neal wont be the one to die, and with his death rumbelle will never be happy, how is that rumple will allow himself to be happy when his son wasnt given that option? I believe that Belle bonded with neal during this past year, so i dont think that she will be able to trully be happy having lost a friend and seing rumple unhappy.
I really hope that they are able to safe rumple from www control before the end of the season,i think that was why belle was sad, because she knew that now they would have to fight rumple, although i read somewhere that he still had the cuffs, so even if the www controls him, i think he wont be able to use magic.