You and Four were childhood friends, but you knew him as Tobias Eaton, and not Four. 
Because of Four’s abusive father, Marcus, you stopped being able to see him or hangout with him when you both turned 14. He seemed to only be apart of a few chapters in your life, while you were the whole book for him. You gave him hope, and he’ll never forget you.

On the day of the initiation, you take the jump and fall into a net. “First jumper. You got a name?” Four asks you as he leans towards the net that caught you.