Answer:
You can find me inside your body but not below the waist or in your tummy. I am located in the upper part and I am a symbol of love.
They're big and blue, and larger than seas
What is yours but only used by others?
Boxers do this for a living and kids do it in the backseat for free
What is brown and is very stick?
Born in the ocean and white as snow. When I fall back to water I disappear without a trace.