on tenderhooks – adj. feeling the primal satisfaction of being needed by someone, which makes you feel that much more rooted to the world, even if the roots belong to someone else.
I feel this all the time with my wife. She needs me, maybe as much as I need her. She tells me, and I both appreciate it and feel lots of pressure to be the person she needs.
It’s an interesting conundrum to feel good that someone wants you around, but also feel some tension about it. It does help me stay rooted, and reminds me that not only have a made a difference in the world to someone, but I continue to do so.
From the Dictionary of Obscure Sorrows