girlfriend changes plans last minute ?????

i passed my driveing the otherday and told my gf she said yay go you etc ill see you tomorrow so i said ok....tomorrow comes she texts me at 4pm saying hi how you just been shopping with my friend..i said ok you want to go out she said acculey iam tired going gym then bed and i said ok so your not seeing me she goes ok we will go out for a meal for you passing ...we went out for a meal was gd and i said do you want to go judo next tuesday she said yeah ok sounds fun...few days later she txts me saying shes not going out drinkin tonight because her friends haveing a party on tuesday an shes going to that an shes hanging out with her work friends 24/7

and planning a weekend away with work to some party town