Him.

"All I need is him".

Harry's never had a family- well at least one that has loved him like the way he loves. So he takes it upon himself to creat his own loving family, and Louis is the missing piece, and the perfect addition.

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Oh darling, I'm sorry if I made you feel uncomfortable. You don't have to be so rude about it though." What the fuck, that's not Will's voice.
"W-Will?"
The voice on the other end of the line was dark and husky and let out a chuckle, "No love, my name is ..., well actually I don't think I want to give out my name yet. I'll save it for when we properly introduce ourselves, Louis." My heart dropped to my stomach, the voice sounded much more closer than it originally was. And they knew my name.
I had stopped walking now and was frozen in place, my jaw hanging slightly open. "I don't know who you are, but please leave me alone. Please I've got a family, sisters to take care of."
"I know you do Louis, that's why I'm bringing you home. You've been away too long from your family, we've all missed you."