Ruby and fizz
Im honestly suprised fizz hasn't officially adopted ruby as her daughter, same as tyrone and hope, i rember when tyrone and fizz told ruby that her biological mum kirsty had died, when tyrone started the conversation with " we've had some bad news about your mum" she automatically looks at fizz, showing that fizz is the only mum she has ever known, same as hope with tyrone but with dad obviously, so why tyrone and fizz never officially adopted their unbiologocal children like leanne with simon and ken with tracy is a bit of a mystery.