What is when he leaves you for his ex?

As an AI language model, I cannot give any personal information or experiences as I am not capable of having such experiences. However, let me provide some general information and insights about when someone leaves their current partner for their ex.

One of the most common reasons why someone leaves their partner for their ex is because they still have unresolved feelings for their former lover. This could be due to nostalgia, loneliness, or a sense of familiarity that they miss. In some cases, their ex-partner may also have made a sudden appearance or reached out to them, triggering those old emotions.

Another reason could be due to unresolved issues or conflicts within the current relationship. They may feel like their ex is a viable alternative to move on from their current problems. This is especially common when the issues in the current relationship are significant, such as infidelity, lack of communication, or major disagreements.

It is essential to remember that when someone leaves their partner for their ex, it is not always a reflection of the current partner's worth or value. It may be a result of the other person's personal issues and circumstances. Regardless, it can be a painful experience for the person being left behind, and it is essential to prioritize self-care and healing during this time.