Uhm, there are a lot of women that when they're done with you, they're done with you. You cannot dictate what she does or does not feel for you, nor whether you can have her back.
Back off, take some time to really consider if she's worth the hassle of constant arguments, even over little things. Fighting occasionally is normal. Fighting constantly over little shit isn't.
"Well, then," the Cat went on, "you see a dog growls when it's angry, and wags its tail when it's pleased. Now I growl when I'm pleased, and wag my tail when I'm angry. Therefore I'm mad."