I'm going to cut things off with a girl
Why do you want to end it with her? Is she being rude?
Yes, she's so mean to me.
Nastiness is so demeaning to anyone, she needs to be talked to. Set a time aside to explain that being mean is not a good way to make the relationship work, something needs to give. If she is still mean then definetly don't date her anymore because you will still be unhappy the whole time.
I think it's just a bad feeling. I will try to work things out and trust her again.
That is a good mindset to have. Try to mend the conflict and if it doesn't work, you still have the ability to end it.