God fed the people manna as they traveled so no one would starve.
This is manna for the heart. With this everything is fine and no one is starving. When the changes are seen is when the person is not around you. They feel like a starving person. Once they get around you they are happy. The feeling become noticeable and when they are around others they wish they were with you.
This works on those who love you or want to be with you but may have other issues going on. If there are obstacles on the other persons side they will be removed!