Please help

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I don't remember much just that it was an 8thyear fic where they have party games in the 8th year common room ginny always invited herself even though she wasnt suppose to be there their relationship is falling apart she cheated on harry with neville telling Neville they had an open relationship and she kinda forced harry to hit her during sex even tho he said he didn't like it one it was during the game making him call her names and hit her in front of everyone he starts falling for draco wip last time i saw it hope somebody can help me any suggestions please