dangerously invested

Today, as I was playing with Tommy, I realized that I had become emotionally invested in my sons, dangerously so. They are a part of my soul, intertwined in such a fashioned that one cannot tell where I end and they begin. Do all mothers feel this way? I would guess so. It seems they hold my heart, along with most of my happiness in their tiny hands. I have never allowed anyone to have that much of me, tiny little thieves.