I really like this girl like am crazy about her?

i really like this girl like am crazy about her but every time i go to talk to her on facebook she tells me to stop talking to her and bees meen like "why are you talking to me plz go way "but only wen shes wih her friend/s but when shes by herself shes really nice to me and asks me questions im friends with her bro and when im in her house she askes all my friends and her bro why are they friends with me she singles me out in front of my friends but away from my friends and her bro and its just me and herself with her friend face to face she talk to me with a proper convo. ive met her 1 year ago nearly and havnt stopped thinking about her since wat should i do i love her soo much