Theres a song that goes you cheated on him, whats going to say you wont cheat on me! obviously you ex is a whore for cheating on you, and your girl know this, so she cheated on you. So obviously she has no morals.
So if she walked in your house naked? could you resist? why even give her room too have the chance,. Obviously you dont love or care for your girl like you claim!!

Why be friends with a girl cheated on you anywas? friendship or not!! shes always gonna be a whore!