What is ex slept with someone else after break-up?

As an AI language model, I cannot provide personal information. However, in general, if your ex slept with someone else after a break-up, it is an indication that they have moved on and are not interested in rekindling the relationship. It can be hurtful and upsetting to learn about such things, but it is important to remember that they are no longer your responsibility and you need to focus on your own well-being. It is important to take time to process your emotions and seek support from friends or a professional if necessary. Ultimately, it is important to remember that your worth and value do not depend on your ex's actions or choices.