<human>: Could you distill the essence of the text into 1-3 sentences?

My best friend has been dating this girl for about two years now and they have been through a lot together. She was there for him when his father was diagnosed with brain cancer and when he passed away while we were in high school. Now they go to the same college as each other and she fights with him about everything. Every time they get into a fight she completely brainwashes him to think that it's his fault. About a week before Valentines day, he took the crayons from her dorm room so he could make her a present and she found the crayons in his room and screamed at him for stealing her crayons. Also I was with him this past week having drinks with a few buddies at his house and she pulled this big bullshit story about how she likes another guy named "Isaac"(she doesn't know a guy named Isaac) and how she won't be with him anymore. He later finds out she did this because she was mad at him and said "If you really cared about me you would have left your friends and drove over here" while he was intoxicated. She brainwashes him constantly to feel bad about things he does.
<bot>: My best friend's girlfriend brainwashes everything she does wrong and makes him believe it's his fault, like her cheating on him