Co-creation is the fashioning of a new reality for ourselves that arises from flowing with the energy of the Universe rather than trying to control it.
Co-creating with the Universe, involves skills that allow you to energetically flow with whatever is showing up in your life, rather than trying to control what is going on. This is not the same as 'just letting things happen to you.' Instead, it is using skill-sets that allow you to create win-win situations, no matter what else is going on.
Co-creating with Others is different from co-operation, in which the goal or vision brings people together. In a cooperative group, individuals come together to work on a common goal (i.e. building a church, developing an educational program, cancer research). The goal, then, is the glue that holds the individuals together. When the goal is accomplished, the group may or may not disband.
Co-creation with Others is the conscious act of 2 or more people coming together because they like being together, they want to be in each other's company and they know, consciously, that the act of coming together will create goals and visions (co-creation).
You are unconsciously searching for co-creation when you decide to marry and start a family. You may be unconsciously seeking co-creation each time you get together with friends, change jobs or move to a new community . This is what you "seek" at a gut level when you feel compelled to gather and share your stories.