Not everyone has your best interests at heart. But sometimes you have to be tricked and mislead by the wrong lovers and friends once or twice in your life in order to find and appreciate your soul mate and real friends when they arrive.
Actions speak louder than words. So don't screw someone over again and again and again, then say "I'm sorry you misunderstood what I said/did". Actions speak louder than your fake words. Your just a lousy person. Nope, no misunderstanding there.