Would you be friends with a liar?

i've been friends with a girl(i'm a girl too) for about 10 years now.. went to same elementary school but diff high schools i went to coed and she went to all girls.... since then we've been hanging out less but i consider her as my best friend but idk what she considers me as; i confronted her last week about just the things that i don't like about her and some problems. and i confronted her about some stuff that were lies and turns out that they were lies; now idk what is the truth anymore or what is fake since idk who to believe. anyway the one that surprised me the most that i seriously CAN'T get over is she went to prom with this random guy n i asked did u kiss n she was like kiss nahh and i knew it was a lie but ppl were like no regina would never lie to you and im like yea ur right; so when i confronted her i found out that that was a lie; i'm just surprised that she isn't what she is, like she told me she doesnt like pda doesnt want a bf ect like doesnt want to be involved in those relationships. so its like another person; and i do NOT want to be friends but when i asked her she said she wants to be friends n idk if thats a lie cuz she barely talks and shows no emotion whatsoever. and yesterday she was like do we start from the beginning but i dont want to i do not want to see her face ever again; backstabber and she's such a desperate slut! so do you think i should be friends with her? i confronted her a few days after n she was like yeah i thought about what you said i feel bad but im like i cried 5 times in one day thats just said and she doesnt even make an effort to start **** like talk first ask to hang out ect.. or she doesnt even give me like a sorry present or my grad gift that she said that she "would" make... pls. help this is all i can think about thanks...