I really do feel bad :(?

[Dennis]

Well this si kinda a long story but here goes; SO sometime last month I started talking to this girl. We would talk everyday for quite a while and last week she admitted to me that she was starting to catch feelings for me and I had feelings for her too BUT the problem was my best friend doesn't like her because this girl has a reputation of being easy p***y but the girl explained to me the stories(too personal to tell) and she still wasn't over an ex of 10 months ago who doesn't want her and cheated on her and stuff she would always say she deserves better. She would always tell me I like you and stuff but she wouldn't ive me a chance because she was afraid of what people would say since her reputation. SO finally yesterday she admitted to me and posted it on FB that she had a crush on me so I finally thought things would pick up and then I posted the same thing and all heck broke loss since my best friend didn't like her so I inboxed my best friend but she said be with her just don't come to me when she breaks my heart. So things were ok the whole day between me and the girl but then I saw her Tweets about how her ex still owns her heart and stuff and she deleted the status saying she had a crush on me so I wrote to her I was done because basically I was Second option. This morning we talked and she was like I like and want you so things were good for a while then she thought about another guy. THen we oovooed and stuff for a while until she said I don't wanna come between you and your best friend but I told her that my best friend doesn't want anything to do with me and showed her photos of people inboxing me telling me how happy they were to to forget what people think but no reply. so I saw she posted something on Twitter and told her not to talk to me because I was being treated as a choice not her #1 and I didn't feel like she liked me even my friends confronted her about it so I inbox my best friend saying she was right and we are good and we are best friends again and the girl said I can't believe I'm losing you and stuff like that but says I'm cruel and that she hates me and to never talk to her again. Now I was fine but I feel really bad because she called me and was really crying and stuff even though I couldn't understand most of what she said but I heard I thought you was different and I really liked you and a while after that she posted on Twitter I miss you already which I guess is about me. I just feel really rotten because she was literally crying