Losing to your younger sibling for the first time is humbling. Shake it off, rematch, and be proud you taught them.

That loss stings because it quietly moves you in the family order and nobody warned you it was coming. The person who beat you got good partly by playing you, over and over, for years. Being outgrown by someone you helped along is one of the stranger mixtures of feelings there is, and both halves of it are honest.

Play again soon, before the moment hardens into something you avoid. Say out loud that they have got good. It costs you nothing you actually need, and it tells them something they will remember much longer than the result of one game.