Friend Problems?

I've had this best mate for 8 years. . we used to be really close. . i mean do evryfin tugetha neva argued. . i no mena be mates before dates and that but since she been going out with this boy she has copmpletey chanegd from the gurl i knew. . she used to be funny and neva show off or think she was mega pretty and all that. . now she does she constatly thinks she phitt and can get any boy she wants. . shows off all tha tym. . ditches meh for him. . we had a huge arguement cus of it but i cant stay mad at her cus she crys and that makes meh feel abd for sayin it. . am i wrong?is it all in my head? PLEASE help!