Please analyze the tweet "#WalkingSideBySide: Great marriages built on #forgiveness &amp;truthfulness; bad marriages on #resentment, bitterness, #deceit &amp;unfaithfulness." and classify its emotional content. Choose from the following emotions: anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust. If no emotions are detected, respond with "neutral or no emotion".