Is it normal that i am cheating on my girlfriend with her sister?

My girlfriend and I have been together for about a year and a half now. For the last six months I have been having sex with her fraternal twin sister. It is not completely my fault for doing this though. Her sister came on to me by wearing skimpy clothing around me. She seduced me one night when I was sloppy drunk. I decided that I cannot continue with this terrible lie. The problem is that she said that she would tell my girlfriend (her sister) about us if I stop sleeping with her. She also threatened to hurt herself if I leave our affair. What the hell do I even do?

Voting Results
39% Normal
Based on 38 votes (15 yes)
Help us keep this site organized and clean. Thanks!
[ Report Post ]
Comments ( 9 )
  • thegypsywhaler

    You gotta kill her.
    Make it look like a whale did it.

    Comment Hidden ( show )
  • klebo

    Walk away from the both of them, the sister is going to tell your GF and if GF asked just say you didnt want anything bad (sister kill herself ) to her coz you care to much for her (GF) yo see her sister hurt herself and not to cause more family pain, or ask them to have a threesome

    Comment Hidden ( show )
  • thegypsysailor

    I love it!
    "It is not completely my fault for doing this though".
    You are justifying your infidelity and total disrespecting of your gf because you tripped and fell and your dick just kinda slipped accidentally into your gf's sister one night when you were drunk? That's your story and you're sticking to it?
    Really? You believe that your infidelity isn't you fault?
    rotflmao

    Comment Hidden ( show )
      -
    • captblood44

      not all of us are responsible drunks. people do stupid things when they drink. why the hell do you think they drink. its called, having a good time.

      Comment Hidden ( show )
  • snarkygirl

    Poor girl has an asshole boyfriend and sister! Maybe she should change her name and move.

    Comment Hidden ( show )
  • Tealights

    Stupid people get into stupid problems.

    Comment Hidden ( show )
  • A2theR

    Try having sex with both, a threesome

    Comment Hidden ( show )
      -
    • captblood44

      have the twin talk her sister into a threesome. do not approach or bring this idea up with the gf. let the evil sister do the dirty work.

      Comment Hidden ( show )
  • noid

    Tell your girlfriend the truth and stop with the sister. And she probably won't kill herself.

    Comment Hidden ( show )