Most Helpful Guy
he'd remember you, but he might not recognize you. like he might not remember you face or name, but he remembers this girl that he played with at the playground that was actually you, or w/e
Most Helpful Girl
I think if the distance is long and without contact, it is expected that he would be occupied with his own life and people around him. He most likely won't be thinking about someone who's far away , that too from childhood.
Unless they are married, or siblings/family