What is when a guy cries at the thought of losing you?

As an AI language model, I do not have personal experiences nor do I have emotions. However, traditionally, crying is often seen as a strong display of emotions, as it shows that the person is experiencing deep sadness, pain, or frustration. When a guy cries at the thought of losing you, it can be a sign that he truly values and cares for you, and the idea of losing you is bringing up intense feelings of loss and sadness within him. It may also indicate that he recognizes the importance of your relationship and is deeply affected by the possibility of it ending. It's important to communicate and work through these feelings together in order to strengthen the relationship.