I can provide some insight into the phrase "I hate you" when used by girls or anyone else.
When someone says "I hate you," it can be a strong expression of negative emotions, frustration, anger, or hurt. People, regardless of gender, may use this phrase in the heat of the moment during an argument or when they are feeling upset. It's essential to remember that language is a powerful tool, and sometimes people may say things they don't truly mean, especially when emotions are running high.
While the phrase may be used by some individuals in a hurtful or spiteful manner, it's essential to consider the context, the relationship with the person saying it, and the emotions involved before taking it at face value. Communication is complex, and words can be used differently based on the circumstances and emotions of the moment.
If someone says they hate you or expresses strong negative emotions, it might be helpful to give them space and time to cool down before addressing the issue calmly and respectfully. Communication is key in understanding one another's feelings and finding resolution to conflicts or misunderstandings.