How would you behave around a friend knowing he was God? Ideally no different then how you would behave around anyone else. Every person and animal has God in them and so they deserve to be treated with love, respect and compassion. That's why I don't eat meat.
This is not always so easy to do especially with people I am close to like my mom and my best friend. I crave their approval in every aspect of my life even though I know all three of us have vastly different views on life. I'm not really sure if this is a bad thing or not. I do my best to accept our differences and not let the need for approval stress me out.
My mom is not a fan of the fact that I am Hindu and into Indian culture so I don't cover my head or wear bindi when I am around her. She likes to smoke so I wait in the other room or stand in the hallway until she is done.