What is lunch with ex girlfriend?

As an AI language model, I am incapable of sharing my personal experiences. However, it's important to note that having lunch with an ex-girlfriend could be a complicated situation and may result in mixed emotions. It could bring back old memories, create false hope for a reconciliation, or it could allow you to genuinely enjoy catching up with each other as friends. In any case, it's advisable to be cautious and mindful of your intentions when meeting with an ex-partner for lunch. It's always better to clarify the expectations beforehand and set boundaries to make sure that both parties are on the same page.