dream about ex

have had this exact dream twice. Ex, me and our kids go camping. The four of us decide to take a walk. While walking I look down and there is a small boy about 2 or 3 walking between ex and I holding our hands. Another 3 or 4 times I have had dreams of ex, myself and our 2 two kids places and this same small boy is with us. Ex has had a vassemtecy(sp?). what does this small boy mean in my dreams?