Not to try bash my own religion, but if you want to feel guilty about it go catholic. You will have a reason then to not want to do it. You can even talk to a priest and have him tell you it is wrong and against gods will. That sex should just he between a man and woman and everything else is just lust and a sin.
But you shouldn't take up a half a dozen threads with it saying it is wrong and side tracking the discussion with your issue. It is inconsiderate.