Board Thread:General Discussion/@comment-25733960-20171216040204/@comment-25926288-20171216135628

8Rob wrote: I'm think there might be another explanations for the 1st one

Rumple wants to get rid of the Darkness. To put it to rest. But he can't truly do it if WRumple is still around. Even if he wants the Guardian and get rid to the Darkness, there will be another Dark One around

So, maybe he finds WRumple and they merge together or something like that? Well, no. Rumple literally said the answer in the episode.