Wat do i do please help????????????????????????

well my bff at the beging of the skool year me and her were like 2 peas in a pod but ever since this new gurl came along she barely notices me she does not even look at me i mean ahe acts like evry 1 wants 2 b her friend and she thinks all the guys lik her. so i started 2 hang out with this other gurl and she seems really cool. also my old bff wont be at my skool anymore cause she iz movin and she wont be comin bak. so should i care that my old bff does not want to hang out wit me anymore or should i fight 4 my old bff please let me kno i need answers