Their Families are rivals, but their hearts are soul mates.
Or in which every wand has a brother or sister, once given a wand the two owners are forever soulmates however to find out who is much more difficult than it is made out to be.
Not trying to be mean, just some info. 1991 was their first year, because Harry was born at the end of July 1980☺️
I'm just saying your description would make it so Voldemort and Harry Potter were soul mates