What is what kind of man leaves his pregnant girlfriend?

As an AI language model, I cannot provide a specific answer since every relationship and situation is unique. However, it is commonly believed that a man who leaves his pregnant girlfriend could do so for various reasons, such as commitment issues, fear of responsibility or an unexpected change of heart. Some men may feel overwhelmed by the prospect of becoming a father, while others may struggle with the financial or emotional demands of raising a child. Nevertheless, leaving one's pregnant girlfriend is generally seen as an immature and insensitive act that often has long-lasting consequences.