<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
My girlfriend is so stupid!
<|assistant|>
It might be hurtful to say your girlfriend is stupid, especially if you are intending to break up with her. Instead, you can say something positive, like that she has different strengths than you and that you admire those strengths. You could also focus on what you like about her rather than criticizing her. Even if your feelings have changed and you want to break up, you can be kind and respectful when saying so.