After it all, when you confront her and try to end things, she’ll enter into denial and vehemently not agree to everything you say. She’ll blame you for misjudging her and find loopholes in all the proof you have gathered. Instead of being upset, shocked, or hurt, she’ll be brutal and create a ruckus. Her words will be spiteful and she won’t accept her mistake. When your girlfriend is cheating on you and does not feel a shred of guilt, that is when you know, it is time to turn your back towards her.