You and Mattheo are related, both of you are just a violent and cold. Like your father Tom Riddle or Voldemort both of you hold a lot of power, it became clear that your father needed an heir—

you quickly became enemies

There was no room for love in both your hearts, in order to avoid any physical abuse you had to be best, not just the best the greatest

You hold the record currently, with fencing or chess even dark arts you win

You always win

You need to win