Answer:
I am three simple words everyone wants to hear. Three simple words such simple words and yet...life changing...
I am the only thing that always tells the truth. I show off everything that I see. I come in all shapes and sizes. What am I?
Squeeze me and I cry tears as red as my flesh but my heart is made of stone.
Keep doing me to avoid lens dryness
A trail, a union, together tied. Come across me and you will find you cannot change the course I'm on. Without me you cannot travel on. What am I?
I am your mother's brother's only brother in law. Who am I?