A platonic friendship is possible even between a guy and a girl

A guy and girl have no different to each other, we are both human so why can't we be good friend just because others might think that you and the opposite sex are in relationship as you two is very close to each other. Friends might not have to be same sex, it has the same logic as having a friend from different race. Be friend do not have to care about what others think about you. So close relationship between guy and girl is possible even if they are not in relatinoship.