Answer:
I will disappear every time you say my name.
I hold two people together but touch only one. What am I?
I'm the source of all emotion but I'm caged in a white prison.
I drive men mad for love of me, easily beaten, never free. What am I?
If you lose me, you may cause people around you to lose me too. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.