I don't understand her. Help?

So me and this girl ,kianna, have been texting and hanging out for a while now and I fell in love with her. So a few days ago she started going out with guy named Ricky and I got really jelous and we got into a argument. It got so bad that she told me I was a jackass and to go to hell. So I told her I already am in hell. So we didnt talk to each other for a few days but then we made up and act like nothing happened. So she got mad at Rickey because he claimed he was single but he said they were still dating. So then I got involed because I didnt want her crying. So later on that day me and Ricky got into a fist fight and then at the end of the fight he said that "Even if u win u can never have her". So today me and kianna was texting and I told her I love her and she said she loved me too. So I asked her out and she said she wants to be single because she needs to fix stuff Rickey. I'm like WTF. Why dose she still want to be with him when she told me that it wasn't working out between them. Idk I need some advice.