yes, Krishna is very real. In fact He is situated in the hearts of all living things. Known as supersoul or Paramatma. "Krishna" means "the all-attractive one." contrary to what each of us may think about each other, God, or Krishna, has been, is, and always will be the most attractive. So, understanding this, we can also understand that Krishna,God, is the source of all that is and ever will be. Many peoples all over the world have different names for God, but we can understand it is the same God.
PS He was born July,19 3228 BC