I was just wondering if I had managed to hook up with another person who likes EDITing with peoples feelings

Ok so this is kinda jacked up right but here goes. Alright so it starts like this right. My cousins crashing the night at my place and he's on the phone with a friend of his (He happened to like her as more then a friend) and he talks from 12 to 2 in the morning and is still talking to her so I start harrasing him about it. So she wants to talk to me after about 10 minutes of harassment. We talk a little and I mess around like I do saying we should hook up. Not serious at all. So then we talk later on and stuff here and there and find myself talking to her more frequently. So one day I'm telling her about me liking this chick and how stupid I feel and BOOM she goes "I'm the stupid one cause I like you and dont wanna" so then theyres this awkwardness and I suggest we could just see where it goes. That was a mistake knowing how my cousin felt about her and all. I was stupid and I regret that. But anyway we go out for a week then shit happens with her retarded friends (apparently the girls well sought after) saying that I'm in it for a piece of ass. She believes em and we fight for a bit, break up and all but somehow we remained friends... For awhile at least. So I still liked her for awhile and shes going out with this other dude and then she dumps him. So then we talk about it for awhile and she said she doesnt know if shed wanna go back out. Then she likes this other guy and is over at my cousins. I start talking to her and she gets on me about being insensitive about my cousin likeing her. I say she needs to let him get over her and she tells me I need to do the same. Then I get fed up because shes been leading me on for a week and a half, spitting out this crap about me being so sweet and all. I ask if theres a chance for us again she goes no. So I get over her (Something I'm used to doing). Next week she tells me she was just saying that cause of my cousin being there and all. I tell her I've gotten over her and then things got odd. She claimed to wanna be my friend still but her actions said different. She started chewing me out more and yesterday her friends start dropping this shit about her never liking me at all. (Mesage me if you wanna see the convo) and I ask her about it today and she turned into a EDITing demon man. She seems to dance a mocking jig then I say QUOTE 
I was just wondering if I had managed to hook up with another person who likes EDITing with peoples feelings
and then her friend gets on and starts threatening me (with my cousin backing him no less) and I found it kinda funny. (Also message if you wanna see the convo) Then later on she IM's me asking me to appologize... Now my question is: Am I wrong to think this girl is a EDITing EDIT? I mean help me out friends.