history: i feel really bad about cheating on my girlfriend with a mutual friend.. i cant even look her in the eye i feel really bad about cheating on my girlfriend with a mutual friend.. i cant even look her in the eye i would feel terrible to thats really bad_comma_ you should just tell her and change! 
current: it was a one time thing.. if i tell her that would break her
next: The truth can set us free, probably better for her and you both. 