girl number 1: she cheated on you once,..she will do it again if you get back with her
girl number 2: you didnt straight out say it but im assuming this girl cheated on her man with you,..and you make it sound like she will leave her man for you,..think about this,..if she cheats on her boyfriend and is willing to leave him for you,..what makes you think she wont cheat on you and leave you for another guy if the chance arises