Mafia Girl

Mafia Girl,

Hey, girl why are you here alone?"
"Leave me alone!"
"Don't worry I'll not hurt you. what's wrong?" "Someone killed my parents. I don't have a family anymore."
"Don't worry. When we grew up I will marry you so you can have a family"
"Really?" Cole nod at her.
"yey! I have a family." she hugged him tightly.
"By the way, my name is Luna Qiao."
"And I'm Cole Ji"

When Cole And Luna were kids they made a promise that Cole will marry her. Now that they have grown up. What about the promise can Cole fulfill his promise to her?