My Sister's Bestfriend<|3

Harry's on break with the lads right before the TMH tour. He gets home only to meet his sister's famous bestfriend, the infamous Ashley Benson. They don't exactly like each other, but they don't seem to dislike each other either.. They end up getting forced by both of their managers, to be a couple. Harry starts falling for her, but he knows they're gonna break up at the end of his tour. She doesn't even seem to like him, except maybe as a close friend. What will happen to these unlikely celebrities?