My girlfriend and I are juniors in college. We've been dating for exactly two years and living together for almost a year. She's cute, kind, has a great body, and I'm the happiest man alive. ...Or I was. I can't believe that of all people, it had to be him! How could something like that happen...? I've often heard people debate where the line for cheating is, and while everyone is different, I thought it was pretty universal. I thought I felt that way, and I thought she did too... A woman's mouth lies! This is a story of NTR that begins with a mouth.