A girl can lose interest but she doesn’t start hating the guy per se.
She may get frustrated with the guy.
She may not find his jokes funny anymore.
She may not enjoy being in his company.
She may realize that she doesn’t have as much in common with him that she initially thought that she did.
This can result in a loss of interest.
However, she doesn’t necessarily hate you even if she seems to be behaving in a way that makes you believe that she does.
Oftentimes, when she acts in this negative manner towards you, it is out of a sense of disappointment and a desire to move on.
There is a good chance that she may have had high hopes for the relationship.
She may have even told her friends excitedly about you when she was getting to know you.
She may have envisioned what it would be like being your girlfriend.
She may have projected a lot of her romantic hopes on you.
Perhaps several of her friends are currently in very healthy and interesting romantic relationships and she feels left out.
You were the person that she thought would get her out of her slump and put her on the same level as her friends.
However, she has realized that you are not that person and she has lost interest in you.
She may act negatively toward you now because of a sense of disappointment and loss.
Those fantasies that she was having about being in an amazing relationship with a guy didn’t work out as planned.
Hence, her behavior toward you is more a reflection on what she is going through emotionally as opposed to actually hating you.
You may interpret her behavior as hate because she is not acting the way she used to with you.
She is no longer smiling at you.
She doesn’t want to talk on the phone anymore.
She doesn’t want to text or rarely does.
She doesn’t want to hang out anymore.
She doesn’t want to know about how your day went.
Do understand that this is how she would act in the aftermath of her sense of disappointment.
It’s unlikely that she will continue behaving this way towards you as long as you don’t keep trying to change her perception of you.
If you were to get into a futile effort to try to appeal to her and win her over once again, you would prolong the process of her negativity towards you.
This is why it is important that you accept that she is no longer interested in you and allow yourself to move forward with your life.
If you keep trying to win her over and regain her interest, you would most likely transition her sense of disappointment to one of dislike.
This isn’t what you want.
You want to be able to move on without leaving her feeling like she made a big mistake by initially giving you a chance at dating or a relationship.
Though things didn’t work out with her, she may still be willing to be friendly with you in the future and you will also be able to find someone new who remains interested in you.