GAH! PLEASE HELP 10 points?

So my boyfriends password on facebook was changed. I was the only one who knew it so he INSISTS i did it. I DIDNT. I dotn know what to do. What can i tell him? He cnat jut reset his pasword becaues he doesnt have access to a computer. and he i tried to change it for him but he doesnt remember what he answered to the sequerity question "In what city or town was your mother born?" He wont tlak to me until i get this figured out. PLEASE HELP ME.