Why did Buffy cut her hair in season 6?

Buffy was sleeping with Spike at the time and felt it was wrong. Before she cut her hair he was in the 부엌, 주방 with her and told her he loved her "goldie locks and they way they bounce when..." 당신 know. So she decided to chop it off.

she was feeling fustrated and she thougt it was wrong to be with spike (don't know why, hems awesome) and he kept mentioning he liked her hair and so she decided to chop it off cause she wanted to be differant (she probably thought she was in a rut and wanted things to change)