When a girl acts like this towards a guy, what makes you think shes doing?

Theres this guy im convinced that i might be inlove with him deep downbut the thing is i pretend that i hate him when ever i see him. i think hes starting to reliaze that maybe i do not like him. we got mutal friends an when ever he comes to talk to them.. and im with them i just ignore him even though at times he tries to make a convo with me ..but i just give him that F***k off attitude! but i have my reasons why i act like this toward him! before all this happend.. we used to be friends..maybe not close friends...just normal general friends till we hookd up one day an thats wen he started actin like a toward me by thinkn he was the **** an also he thinks hes a player.. i know hes a bit of wominizer.. wen i stopd givin him attention by texts, face to face .. msn .. he startd txtin me abwt after 2 month bein all nice & again he kissed me & again he went back to his old self and GUESS WHAT removed me off msn. he never have ever textd me expect that one time wen he was tryin to be all nice but i figured he did that coz he wantd someone to hookup with, before our 2nd kiss said once on msn that our kiss was a mistake, a week after ma bday i gave him da hint it was ma bday the week before an he jst goes Ok no happy bday or anything & wen ever he used to txt it was jst simple! ! so my plan now is to get back at him..i dnt know how but i need to get back at him somehow coz he hurt'd me so bad! so do u guys think f i keep actin like a ***** toward him will it do anything? like f u guys hookd up wit a chick etc..& she startd acting like dat toward u guys..wat wuld u think?