My initial thought is that Regina will use the existence of Belle as a tool, a shield if you will. So there will be some kind of conflict, and Regina will pull the old, back off or Belle get’s hurt routine. My other thought is that Mr. Gold knows Belle is alive, but his plan isn’t complete and he doesn’t know where she is. He planned the scenario of Storybrooke so the EQ would enact it, because only in Storybrooke can Rumplestiltskin still retain his evil powers and love Belle at the same time.