Please hepl:( read details!?

so i have this friend who i like soo much lets call her one and she also does in the morning i go to pick her up and we go together to school but also with a girl lets call her cat i like her too and then one day chatted one and said iff she wants to go out but then she said she will go out with her friends (in facebook chat) then i asked her if cat is free she said no its because im going out with her so then she went offline so i really wanted to go with them so i called the girl and then her dad answered and i said if i can talk to her he said ok then i heared her dad calling the girl and the girl said "OH NO NOT HER" then she answered and i asked her if i can go with her(one) and (cat) and then she said also with another girl the other girl is lets call her yes i hated yes from the beging of the year and i think she hates me too and then we started to like each other then idk then she asked them and i heared them saying "no no we dont want her" then she lied to me and said we are going with the car to the mall and there is no place in the car i know she is llying i heared them and im sad i cant belive she lied to me and did that to me she like one of my besties and now the question is what should i do should i go pick her up in the morning or should i talk to her what should i do shoud i get sad at her ???? Help thanks for readin and sorry it was long thank u