We have a version of Girlfriend who's gone crazy. What exactly happened, no one knows, but one thing is for sure - she is dangerous, and Boyfriend needs your help to defeat her in a musical battle, because this is the only way for her to keep her distance! Custom songs new songs: Winter horror land. Christmas ever. How to play FNF vs Crazy Girlfriend online To win, you have to have a better beat than the Girl and you have to hit all the notes of the song at the right time using the arrow keys. Good luck!