The "Real" Me

I always wonder how people perceive me. It's been brought to my attention after sharing my music video (it's on youtube) that people didn't realize I had a different side to me. Thing is what is that different from? I'm oblivious 'cause I know who I am but I never realized that certain people see certain sides of me. Others see other sides. Now, if others can only see certain sides of me then am I only seeing "certain" sides of my friends? What am I missing?