should i stay with my girlfriend

when we first got together it was perfect and we fell in love, but then she started hangin out with friends more than me, so we break up and i dont talk to her for a while cuase im trying to get over her, but then she comes to my house and she says that it will be better and she still loves me and she wanted a second chance so i gave it to her im just trying to figure out if we will constantly go back and forth with the spllitting and getting back togetther, all my friends say im an idiot for getting back with her but im in love and i dont know what to do, im not sure if she is really in love with me or not cuase she is so caring and loving when we are together but over the phone she talks to me like im nothing to her and its like she is running the relationship her way and i think it should be a couple thing like both of us should work together not just me i just feel like i come second best but i just dont know, i cant tell if she is just messin with my emotions or toyin with me or playin me or what, i just need some help. If anyone has any advice it would be great