Memories. (Harry Styles Fan-Fic)

"I love you Sam" My words didn't make what i did okay and hell, why should she believe them. All i did was break her heart. But i needed her, i truly loved her "Goodbye Harry"~
Harry styles a man who loves to party and drink has the best girlfriend he could hope for, well he did. He ends up cheating on her with a girl from a bar. She caught him in the act and leaves. His heart is in pieces.
He becomes depressed and begins drinking heavily.
One night he ends up going to his good friend Niall horan's party to try to get his mind off Sam. But it failed miserably as it turns out he first met her at one of his party's.
He ends up leaving and picking a stranger up on the side of the road. He offers the stranger a guest bedroom at his house, so it didn't feel so empty.
Will his new roommate help get Harry back on his feet? And forget his ex girlfriend Sam?