I can provide some general advice on how people might behave when they meet their ex after a long time:
Nervousness and Tension: Meeting an ex after a long time can be emotionally charged. You might feel nervous or tense, especially if the breakup was difficult or if you haven't seen each other in a while.
Politeness and Civility: It's common for people to maintain a polite and civil demeanor during such encounters. Being respectful and courteous can help keep the interaction amicable.
Small Talk: Initially, there might be small talk about general topics like work, hobbies, or mutual acquaintances. This can serve as a way to break the ice.
Reflecting on the Past: The conversation might drift towards reminiscing about shared memories or experiences you had together in the past.
Avoiding Sensitive Topics: While it's natural to discuss what each other has been up to, sensitive topics like past relationship issues or the reason for the breakup might be avoided.
Assessing Feelings: Both parties might be subtly or not-so-subtly trying to gauge each other's feelings during the interaction.
Remaining Guarded: Depending on the nature of the breakup and the emotions involved, individuals might keep their guard up and be cautious about revealing too much about themselves.
Deciding Future Interaction: After the initial meeting, people might think about whether they want to maintain contact or keep their distance going forward.
It's important to remember that everyone is different, and people's behavior in such situations can vary widely based on their personalities, the nature of the breakup, and their current emotional state. If you find yourself in this situation, try to be true to yourself and act in a way that aligns with your feelings and well-being. It's okay to take time to process your emotions and decide how you want to handle future interactions, if any.