Shes playing me,but its hard to let go,and i feel like shes using me?

i met this girl,she was attached to me in 3 weeks,and we talked for 3 months,she use to break her back to text me,and now she rarely does it,like,she use to text me good morning alll the way to good night,all in between the day,we use to text,then she started to texting me,just wyd in the middle of the day,then one day,she just didnt text me at all,so after i saw she hacked a guy`s page on fb,and by me knowing her style,i confrotned her about it,and she told me"i already told you how how i feel about you,and that she didnt hack his page" before this,she told me,thats her bestfriend`s bf,and that i was tripping,yet,i see her only liking his stuff,he put i love you,and she responded with :)<3<3<3,and thts her style,she told the guy,i love youuuu,love your babygirl :)<3<3<3,thts wht she hacked,then she liked it,but she says i falsely accuse her so much and tht she let me.but yet,i apologize,like today,i text her,im movin on wit my life,and she told me,you gotta do what you gotta do...and wen i told her,yep,she came back and told me"but im not just saying i have feelings to make you feel good,im saying it because they are true"i felled for it,and told her i still love her and always will,and that i did that to see what shes gonna say,and she didnt repond back,so i txt her again,that i needed to know an answer,and she didnt respond,so i text her,u been playing me long enough,and i know you have a new attachment,cause she dont even bother to text me like she use to,snd that at least finish my answer.and wen i text her that,all she put is,"im chillin wit family",but its always something,short and thatll be it,so simply,how do i blow her off,without feeling bad,cause i wanna blow her off,but ima one guy girl,and everytime i blow her off,i feel horrible on the inside,like i made a mistake,but shes playing me,and i got too attached.but she lives with her bf and has a bunch of guyfriends,but she keeps holding on to me i feel like