Is it ethically OK to tell a prospective employer that you can commit to a year contract while knowing full well that if you get a teaching position you will be out of there like lightning?
Is it ethically responsible to tell someone you're extremely happy for them when inside you're being eaten by jealousy (I would say, yes.)
When you've lost something, is it acceptable to tell the person who needs to get it to you again that the plane lost it? I'm not claiming on insurance...
Is it OK to make an excuse to not do something instead of just saying, "Hey, thanks for the invite, but I don't want to."?
What are the little lies that are confusing you at the moment?