Recently, I watched this amazing video, that really explains a lot. At the end of the video, it shows Finn putting a blanket on Rose, and Rey sees it happen. She understands that she saved his life, and that he is grateful. Now, this might be a coincidence, that they were in the same place at the same time, but what if they were doing everything together, because they were seeing eachother. In the words of Lucy Maud Montgomery, they were made and meant for eachother.